Anchor Text

Psalm 40:6-8 — A Body You Have Prepared for Me

The Anchor Text

"Sacrifice and offering You did not desire, but my ears You have opened" [LXX: "but a body You have prepared for Me" — the form Hebrews 10:5 quotes]". Burnt offerings and sin offerings You did not require. Then I said, "Here I am, I have come — it is written about me in the scroll: I delight to do Your will, O my God; Your law is within my heart."" (vv.6-8)

— Psalm 40:6-8 (Berean Study Bible; English versification, MT 40:7-9)

Setting. A Davidic thanksgiving psalm with a sharply bipartite structure. Verses 1-10 record the speaker's deliverance from the "horrible pit" and his vow of public praise; verses 11-17 turn back to petition under fresh affliction. The psalm's engine is vv. 1-3: the pit, the miry clay, the feet set on rock, and the new song whose stated effect is evangelistic — "many will see and fear and put their trust in the LORD" (v. 3), beholding-unto-trusting. The order carries theological weight: grace precedes consecration — the rescue comes before "Then I said, 'Here I am, I have come'" (v. 7), so the willing obedience of vv. 6-8 is the response to deliverance, never its price. (Read prosopologically with Hebrews, the pit-deliverance is the resurrection-side context of the Son's obedience-through-death — cf. Heb 13:20's "brought back from the dead.") The anchor verses (6-8) sit at the center of the thanksgiving movement: in response to deliverance, David declares that sacrificial ritual is not what God ultimately desires, and that he himself comes — willing, obedient, with God's law internalized — as the proper response, and then vows the public proclamation of vv. 9-10 ("I have proclaimed righteousness in the great assembly" — the same first-person assembly-speech Hebrews elsewhere assigns to the risen Christ, Ps 22:22 → Heb 2:12). The psalm is an inner-canonical critique of sacrifice-without-obedience voiced by Israel's king, anticipating the moment when sacrifice and willing-obedience finally coincide.

The prosopological boundary (v. 12). Hebrews' assignment of the psalm's voice to Christ is clause-scoped, not whole-psalm: the author cites vv. 6-8 (LXX) as the Son's incarnational speech and stops there. At v. 12 — "my sins have overtaken me… more than the hairs of my head" — David's own voice as the delivered-yet-still-sinful king resumes: the type speaks as a sinner where the antitype cannot. (The church's older whole-psalm instinct can stand only under strict imputation — the Surety confessing as His own the iniquities of His people laid upon Him, Isa 53:6; 2 Cor 5:21 — never sin personally His.) Far from threatening the Hebrews reading, v. 12 argues for it: the psalm confesses its own speaker's insufficiency and thereby demands a greater Speaker for vv. 6-8.

The textual issue at verse 6 — the central interpretive crux.

Text	Reading	Implication
MT (Hebrew)	אָזְנַיִם כָּרִיתָ לִּי — ʾoznayim kārîtā lî — "ears You have dug for Me"	Suggests the willing-servant idiom of Exodus 21:6 (the bondservant whose ear is pierced as a permanent mark of voluntary lifelong service) and the obedient-ear motif of Isaiah 50:5 ("the Lord GOD has opened My ear, and I was not rebellious"). The opened ear is the organ of receptive obedience.
LXX (Greek)	σῶμα δὲ κατηρτίσω μοι — sōma de katērtisō moi — "but a body You have prepared for Me"	Translates the synecdoche: the opened ear (the part) stands for the whole prepared body offered in willing obedience. Whether this reflects a different Hebrew Vorlage or (more probably) an interpretive rendering of the MT, the Greek translator preserves the theological intent — the body as the instrument of willing-obedience — even as he changes the figure's vehicle.

(One witness-honesty note: σῶμα is the reading of the great LXX uncials — Vaticanus, Sinaiticus, Alexandrinus — and of this vault's own LXX Reference psalter; Rahlfs' edition, however, prints ὠτία ("ears") at LXX 39:7, judging σῶμα possibly an inner-Greek development. The uncial unanimity and the plausibility of a pre-Christian interpretive rendering stand on the other side. Hebrews, in any case, cites the σῶμα form, and the vault's canonical witness carries it.)

This LXX divergence is not incidental; it is the textual ground on which the entire Hebrews 10 argument is built. The author of Hebrews cites the LXX form because it enables him to argue that the Father has prepared a body for the Son's incarnation, in which the Son will offer the once-for-all willing-obedience that the Levitical sacrifices could only adumbrate.

Why This Text Anchors a Network

Psalm 40:6-8's network is modest in NT breadth but extraordinarily load-bearing. Eleven documented IPs — three NT-to-OT, all within Hebrews 10 (a single NT locus), plus eight OT-to-OT siblings in the sacrifice-vs-obedience chorus — do not yield broad citation reach, but the citation that exists is one of the most theologically weight-bearing uses of any OT text in the entire NT. Three features explain why this passage became canonically generative for Hebrews:

1. It supplies an inner-OT critique of sacrifice from the mouth of David. Psalm 40:6-8 belongs to a prophetic chorus — 1 Sam 15:22, Isa 1:11, Hos 6:6, Amos 5:21-24, Mic 6:6-8, Jer 7:21-23 — that names the Levitical system's provisional character from within the OT itself. What distinguishes Psalm 40:6-8 from the prophetic critique is that here a king speaks in the first person about his own coming in willing-obedience as the alternative God desires. The text does not just critique the cult; it carries the seed of its successor.

2. The "Behold, I come" formula is incarnational in shape. The Davidic speaker says, "Behold, I come; in the scroll of the book it is written of Me. I delight to do Your will." The grammar combines (a) a coming announcement, (b) a scriptural-testimony claim ("it is written of Me"), and (c) a willing-obedience pledge whose object is the Father's will. This three-fold grammar maps with extraordinary precision onto the incarnation: the Son comes, the Scriptures testify of him, and his earthly work is the doing of the Father's will. Hebrews recognizes that the psalm's first-person voice is prosopologically available to the incarnate Son in a way no other psalm of obedience is.

3. The LXX's "body prepared" reading enables incarnation-theology. Where the MT speaks of the opened ear (the organ of obedience), the LXX speaks of the prepared body (the instrument of obedience). The Greek translator's choice — whether paraphrase or different Vorlage — supplies Hebrews with the exact vocabulary needed for an argument the MT alone could not anchor: the Father has prepared a body for the Son, in which the Son will render the willing-obedience that does away with the first covenant's sacrifices. The incarnation-reading of Hebrews 10 turns on this single LXX word — sōma.

The Anchor Text (BSB)

Psalm 40:6-8

6Sacrifice and offering You did not desire, but my ears You have opened. Burnt offerings and sin offerings You did not require. 7Then I said, “Here I am, I have come—it is written about me in the scroll: 8I delight to do Your will, O my God; Your law is within my heart.”

OT-to-OT Network

Psalm 40:6-8's OT-internal echo network is doubly inward — and, strictly, a thematic constellation rather than a citation-chain. Only row 1 (Leviticus) and row 4 (Exodus 21) are texts the psalm presupposes or reworks; rows 2, 3, and 5 (Micah, Jeremiah 7, Jeremiah 31) are sibling voices in the same sacrifice-vs-obedience stream, not citations of Ps 40 (see the file's own note below and the §10 sibling category). The anchor presupposes the Levitical sacrificial system in order to relativize it; the IPs document these relations explicitly.

#	OT Use	Anchor Connection	IP
1	Leviticus 1 (the cultic system Ps 40:6 critiques)	The "burnt offering and sin offering" formula of Ps 40:6 directly invokes the Levitical sacrificial categories established in Lev 1 (burnt offering) and Lev 4 (sin offering). The psalm assumes the system's existence and presupposes the reader's familiarity with it — the critique only works because the categories are already in place. The relation is two-way: read canonically and in hindsight, Ps 40:6 exposes the provisional character the sacrificial system always carried — presupposing the cultus (burnt offering, sin offering) as institution, not exegeting Leviticus 1 as a text — a provisional order that anticipates its own surpassing by the willing-obedience of a coming king.	Ps 40:6 → Lev 1
2	Micah 6:6-8 (the prophetic-critique chorus)	Micah's "what does the LORD require of you?" — the most extended prophetic statement that God desires justice, mercy, and humble walking over multiplied sacrifice — is a sibling voice to Ps 40:6's "sacrifice and offering You did not desire." The same Spirit-led OT critique of cult-without-obedience, voiced by a prophet rather than the king.	Mic 6:6-8 → Ps 40:6-8
3	Jeremiah 7:21-23 (the prophetic-critique chorus)	Jeremiah's "I did not speak to your fathers… concerning burnt offerings and sacrifices… but this command I gave them: Obey my voice" — the most explicit prophetic denial of cultic priority — is the closest prophetic parallel to Ps 40:6-8's relativizing of sacrifice in favor of willing obedience. Another sibling in the OT's own self-critical chorus that Hebrews 10 consummates.	Jer 7:21-23 → Ps 40:6-8
4	Exodus 21:6 (the willing-servant idiom)	The bondservant whose ear is pierced at the doorpost as the permanent mark of voluntary lifelong service supplies a debated background for the MT's "ears You have dug for Me" (Ps 40:6) — the verbs differ (kārâ, "dig," vs. Exod 21's rāṣaʿ, "bore"), and the psalm digs both ears where the rite bores one (cf. TT 189's lexical note, which grounds the willing-servant typology on Ps 40 and the Servant Songs rather than the rite). Whatever the idiom's source, the opened ear is the organ and emblem of receptive, willing obedience — the very disposition the psalmist claims and Hebrews assigns to the incarnate Son.	Ps 40:6 → Exod 21:6
5	Jeremiah 31:33 (law written on the heart)	The network's finest organic thread: the Davidic speaker's "Your law is within my heart" (Ps 40:8) is the germ of the new-covenant promise — the law God will write on the heart of all His people (Jer 31:33). Hebrews 10 splices the two texts around the once-for-all offering: Ps 40:6-8 cited at vv. 5-9, Jer 31:33-34 at vv. 15-17 — the One in whom the law was internally delighted-in secures the covenant in which it is internally written.	Jer 31:33 → Ps 40:8

The prophetic-critique chorus (rows 2-3). The broader prophetic chorus to which Psalm 40:6-8 belongs — 1 Sam 15:22 (Samuel to Saul: "to obey is better than sacrifice"), Isa 1:11 ("I have had enough of burnt offerings"), Hos 6:6 ("I desire mercy and not sacrifice"), Amos 5:21-24, Mic 6:6-8, Jer 7:21-23 — frames the psalm's position within the OT's own self-critical voice. These prophetic texts are not citations of Ps 40 but siblings to it: the same Spirit-led OT voice that names the cult's insufficiency in different mouths and at different stages. The two closest siblings, Micah 6:6-8 and Jeremiah 7:21-23, are now documented as IPs (rows 2-3 above); the others remain undocumented siblings (see §10). Hebrews 10's argument is not an innovation; it is the consummation of a critique the OT itself initiated.

The "scroll of the book" reference (Ps 40:7). The Davidic speaker says, "in the scroll of the book it is written of Me." In the psalm's own context, the scroll likely refers to the Torah's prescriptions — possibly Deut 17:14-20's law of the king, which binds the Israelite king to write the Torah on his own scroll. The willing-obedience of verse 8 ("Your law is within My heart") fulfills the king's Deuteronomic charge. Hebrews's reading extends this: the Son's coming is itself the thing written in the scroll of Scripture; the Father's will inscribed on the page finds its embodied counterpart in the Son who comes to do it.

NT Citations

The NT cites Psalm 40:6-8 in one extended passage — Hebrews 10:5-9 — documented in three IPs in the vault (verses 5-7 covering the main citation, verses 5-9 the extended argumentative use, and Heb 10:10's "sacrifice of the body" as a derived intra-chapter echo). The single concentration of citation in Hebrews 10 — one NT locus — is itself diagnostic of the network's character: this is not a text quoted widely across the NT, but a text quoted with extraordinary argumentative weight at a single, structurally decisive point in the canon.

The foundational citation — Hebrews 10:5-7

Passage	Anchor Verse	Use	IP
Hebrews 10:5-7	Ps 40:6-8 (LXX form)	CRITICAL: "When Christ came into the world, He said: 'Sacrifice and offering You did not desire, but a body You have prepared for Me. In burnt offerings and sacrifices for sin You had no pleasure. Then I said, "Behold, I have come — in the volume of the book it is written of Me — to do Your will, O God."'" — Hebrews places the LXX form of Psalm 40:6-8 in the mouth of the pre-incarnate Christ at the moment of his entry into the world. The prosopological move is structurally identical to Hebrews's earlier use of Psalm 110 (Father to Son) and Psalm 22 (Son to Father, Heb 2:12): the Davidic first-person voice is reread as Christ's first-person voice — here, the Son's incarnational mission statement. The LXX's "body prepared" reading is essential: without it, the argument that the Son's body is the instrument of the willing-obedience that replaces the sacrificial system has no textual anchor.	Heb 10:5-7 → Ps 40:6-8

The extended argumentative use — Hebrews 10:5-9

Passage	Anchor Verse	Use	IP
Hebrews 10:5-9	Ps 40:6-8 (extended)	CRITICAL: "Previously saying, 'Sacrifice and offering, burnt offerings, and offerings for sin You did not desire, nor had pleasure in them' (which are offered according to the law), then He said, 'Behold, I have come to do Your will, O God.' He takes away the first that He may establish the second." — Hebrews now performs the operation that the citation made possible: the citation is parsed into two clauses, and the second clause is shown to abolish the first. The Levitical sacrificial system ("the first") is taken away by the willing-obedience of the Son ("the second"). The author then immediately applies this to the once-for-all offering of Christ's body (Heb 10:10-14). The argument is structurally inseparable from the citation: without Ps 40:6-8 read as Christ's incarnational speech, there is no warrant for declaring the Levitical system superseded by the will-doing of the Son.	Heb 10:5-9 → Ps 40:6-8

How the citation operates

This citation performs three distinct interpretive operations simultaneously:

Alternate text-form dependence — Hebrews depends specifically on the LXX form (sōma / "body prepared") that diverges from the MT (ʾoznayim / "ears opened"). The argument cannot be reproduced from the Hebrew. This is one of the canon's clearest LXX-dependent NT arguments — comparable to Hebrews's use of Ps 8 (LXX "a little while" reading) and Acts 15's use of Amos 9:11-12 (LXX).
Prosopological assignment — Hebrews assigns the Davidic first-person voice of Psalm 40 to the pre-incarnate Christ at the moment of incarnation. The speaker shift (David → Christ) is made explicit ("when Christ came into the world, He said…") and is the hermeneutical move that makes the entire argument possible.
Direct citation — Hebrews quotes substantially the LXX form, with deliberate adaptations (10:6's οὐκ εὐδόκησας, "took no pleasure," where the LXX reads ἐζήτησας/ᾔτησας; the LXX's ἐβουλήθην dropped at 10:7, re-syntaxing "to do Your will" directly onto "I have come"; "O God" without the LXX's "my God"), and treats it as a spoken word of Christ. This is not allusion or echo; it is the most explicit form of OT citation, apostolically adapted.

The convergence of all three operations at a single citation point is rare, and it is what makes Hebrews 10:5-7 a paradigm case of LXX-dependent prosopological reading.

The rail-boundary of the citation. Within the prosopological-psalm family, Psalm 40 is a two-rail psalm carrying a one-rail clause at the LXX fork. The MT rail — dug ears, internalized Torah — is genuinely instantiated in David (the Deut 17:18-19 king with the law on his own scroll and in his own heart, in measure), so the Davidic experience is a true shadow, escalated. But the LXX σῶμα-clause as Hebrews deploys it runs on one rail only: "when Christ came into the world, He said" assigns the speech to the Son at His entry into the world — a moment no Davidic experience instantiates. Hebrews' citation boundary confirms the surgical scope: it quotes through "to do Your will" (v. 8a) and never touches v. 12 (see §1's prosopological-boundary note). And the citation's own landing is not v. 9 of the psalm but Heb 10:19-22: because the body was offered once for all, "let us draw near with a sincere heart in full assurance of faith, having our hearts sprinkled clean from an evil conscience" — the "new and living way… through the curtain of His body" (10:20) is the sōma of the citation become the believer's open door.

Patterns Across the Network

Four observations across this compact but weighty network:

1. Density-to-weight inversion. Most NT citations of OT texts are characterized by either high density and moderate weight (e.g., Ps 110:1's ~25 citations supporting a single Christological theme) or moderate density and moderate weight (most anchors). Psalm 40:6-8 displays the opposite profile: two citations, but extraordinary structural weight. Hebrews 10:5-7 is not one citation among many in an argumentative chain; it is the foundational OT citation for the vv.5-10 abrogation-and-establishment argument (the chapter's session rests on Ps 110:1 at vv.12-13 and its sufficiency conclusion on Jer 31:33-34 at vv.16-18) and, by extension, undergirds one of the epistle's two main theological claims (the once-for-all sufficiency of Christ's sacrifice, paired with the High Priestly Christology rooted in Ps 110). The network's small footprint masks an outsized canonical role.

2. The LXX-dependence is load-bearing, not incidental. Many NT citations use LXX phrasing where the difference from the MT is stylistic. Hebrews 10:5-7 is one of a handful of cases where the LXX divergence carries the entire theological weight. Remove the LXX's "body prepared" and substitute the MT's "ears opened," and Hebrews's argument has to reroute itself through metonymy (ear → body → incarnation) rather than the LXX's direct grammar (body → incarnation). The Reformed tradition has not been embarrassed by this LXX-dependence, rightly stated: the LXX rendering was providentially prepared and apostolically ratified at this point, and its authority derives wholly from its incorporation into the inspired text of Hebrews — not from any inherent inspiration of the Greek version. What is God-breathed here is the apostolic citation as recorded in Hebrews 10, whatever its source-text.

3. The prosopological grammar is structurally Hebrews's. Hebrews repeatedly assigns OT first-person voices to Christ: Ps 22:22 → Christ's resurrection-side voice (Heb 2:12), Ps 110:1 → the Father addressing the Son (Heb 1:13), Ps 40:6-8 → the Son's incarnational mission statement (Heb 10:5-7). The three psalms together form a Christological speech-arc within Hebrews: incarnation (Ps 40) → suffering and praise (Ps 22) → exaltation (Ps 110). Hebrews's Christology is unintelligible without recognizing that its OT citations work prosopologically — and Ps 40:6-8 supplies the incarnational moment of this arc.

4. The text is the consummation of an OT chorus. Hebrews 10's argument does not invent the critique of sacrifice; it consummates it. The prophetic chorus of 1 Sam 15:22, Hos 6:6, Mic 6:6-8 already taught that obedience surpasses sacrifice. Psalm 40:6-8 specifies that the surpassing obedience would come from a coming one who speaks in the first person and whose mission is inscribed in the scroll. Hebrews 10 identifies that one as Christ and shows how the willing-obedience announced in the psalm is consummated in the offering of his prepared body. The network is small; the chorus behind it is large.

Theological Significance

Psalm 40:6-8 carries Christological weight that, in conjunction with Heb 10, anchors the once-for-all sufficiency of Christ's atoning sacrifice — one of the central pillars of Reformed/Westminster atonement theology. Four implications:

For atonement. The Hebrews 10 argument grounded in Ps 40:6-8 is the scriptural ground of the doctrine that Christ's offering is once-for-all sufficient and unrepeatable. Verse 14 — "For by one offering He has perfected forever those who are being sanctified" — is the doctrinal conclusion that Heb 10:5-9 has just established by exegesis of Psalm 40:6-8. The Levitical sacrifices, which had to be offered repeatedly because they could not perfect the worshiper, are abolished by the single offering of the Son whose willing-obedience the psalm announced. Westminster Confession 8.5 — "The Lord Jesus, by His perfect obedience, and sacrifice of Himself, which He, through the eternal Spirit, once offered up unto God, hath fully satisfied the justice of His Father" — is built upon precisely this exegesis. Note the confession's own trinitarian grammar, which is the verse's: the Father prepares the body, the Son receives and offers it — the priest of the offering, never its instrument merely (Heb 9:14, "through the eternal Spirit offered Himself") — and the Spirit forms it in the womb (Luke 1:35) and carries the offering. The whole Trinity is in the prepared body.

For the covenant of redemption. Heb 10:5-7 is the locus classicus of the pactum salutis heard from the inside: the Son's own voice consenting, at the threshold of the incarnation, to the work the Father gave Him from all eternity (WCF 8.1 — "given… from all eternity"). "Then I said, 'Behold, I have come'" is consent, not conscription — the federal undertaking freely embraced, and embraced with delight (v. 8). The Reformed tradition built the doctrine here (Owen's Exposition; Goodwin; Flavel's Fountain of Life on the covenant of redemption), and this citation is why: nowhere else does the canon give us the Son's consent voiced at the very threshold of His coming into the world.

Against the moralism trap. One guard the text itself demands: "God does not want your sacrifices, He wants your obedience," preached straight, is still religion — it merely swaps ritual performance for moral performance, and repeats the error the psalm condemns. Hebrews' gospel reading places the willing obedience in Christ's mouth, not ours: "by THAT will WE have been sanctified through the sacrifice of the body of Jesus Christ once for all" (10:10). The believer's acceptance rests on the Son's delighted will, never on the believer's performance — church attendance, devotional streaks, a clean record, or self-atonement through prolonged guilt are the modern libations God "did not desire" when offered to manage Him. Obedience is the fruit of acceptance, never its ground; and the first thing God takes away from anyone is their own offering — "He takes away the first that He may establish the second" (10:9) is enacted in every believer's biography as the removal of self-salvation to establish Christ-dependence.

For incarnation. The LXX's "body prepared" reading, sealed by Hebrews's prosopological deployment, supplies a key NT formulation of incarnation: the Father prepares a body for the Son's earthly mission. The body is not incidental to redemption; it is the instrument of willing-obedience by which the Father's will is done. The Reformed conviction that the incarnation is teleologically ordered to the atonement — that Christ became incarnate in order to offer himself — finds direct textual warrant here. The Son says at his coming, "a body You have prepared for Me… I delight to do Your will." The body and the will-doing are inseparable.

For the inadequacy-contrast. The connection-method classification of this network is Promise-Fulfillment (primary, prosopologically voiced) + Contrast + Longitudinal Theme. Hebrews does not argue that the Levitical system was wrong; it argues that the system was insufficient — that it pointed beyond itself to a willing-obedience it could not enact. That is the Contrast pattern: the OT institution reveals its own inadequacy and thereby points to Christ; and the sacrifice-vs-obedience chorus (§3) is the Longitudinal Theme within which the contrast develops. Psalm 40:6-8 is the OT's own announcement of this inadequacy; Hebrews 10 is the NT's announcement of its surpassing.

For the I-have-come Christological formula. The "Behold, I come" of Ps 40:7, placed by Hebrews in Christ's mouth, finds remarkable resonance with the I-have-come declarations of the incarnate Christ across the Gospels: "I have come to seek and to save the lost" (Luke 19:10); "I have not come to bring peace but a sword" (Matt 10:34); "I have come that they may have life" (John 10:10); "I have come down from heaven, not to do My own will, but the will of Him who sent Me" (John 6:38). The last of these is a strong thematic resonance with Ps 40:7-8 — "I have come… to do Your will" — though the shared clause is Johannine idiom (cf. 4:34; 5:30), not a verified verbal citation. The psalm supplies the OT template for the I-have-come Christological self-disclosure.

Documented Sibling Connections

Beyond the citation-IPs of §3-§4, the anchor stands within a web of inner-canonical sibling connections — texts in the same sacrifice-versus-obedience and willing-servant orbit — each with its own pair. They are recorded here as siblings for the reader, not as citations of Psalm 40 (the Heb 10:10 row is the exception — an NT echo derived within the citation chapter itself):

Connection	Relation	Pair
Ps 40:6-8 ↔ 1 Samuel 15:22 ("to obey is better than sacrifice")	Closest sibling in the sacrifice-vs-obedience chorus	Ps 40:6-8 → 1 Sam 15:22
Ps 40:6-8 ↔ Hosea 6:6 ("I desire mercy and not sacrifice")	Pivotal prophetic parallel, cited by Jesus twice (Matt 9:13; 12:7)	Hos 6:6 → Ps 40:6-8
Ps 40:7 ("ears You have opened") ↔ Isaiah 50:5 ("the Lord GOD has opened My ear")	Strongest Hebrew-text sibling on the opened-ear servant idiom	Isa 50:5 → Ps 40:6
Heb 10:10 ("sacrifice of the body of Jesus Christ once for all") ↔ Ps 40:6 ("body You have prepared")	A derived NT echo within Heb 10 itself — the "body" of v. 10 is the "body" of v. 5	Heb 10:10 → Ps 40:6

The sacrifice-vs-obedience chorus is the closest sibling orbit — 1 Sam 15:22 and Hos 6:6 remain here as documented siblings, while the closest three, Micah 6:6-8, Jeremiah 7:21-23, and Jeremiah 31:33 (the law-in-heart thread), stand in §3 as network rows; together they supply Hebrews's argument with its proper OT backdrop, the OT's own self-critical voice naming the cult's insufficiency from within. Two further connections: John 6:38 ("I have come down… not to do My own will" — §6 marks it a strong thematic resonance with Ps 40:7-8, though the shared clause is Johannine idiom, not a verified verbal citation) and Eph 5:2 ("gave Himself up for us, a fragrant offering").

The New Song (Telos)

The argument above proves the once-for-all sufficiency; the psalm itself sings it — and its anchor verb is not "comply" but delight.

The Volunteer. "Then I said, 'Here I am, I have come… I delight to do Your will, O my God'" (vv. 7-8 — the vault's own LXX renders it "to do Your will, O my God, I wanted"). He was not conscripted; He volunteered, and He volunteered gladly. The obedience that abolished the Levitical system was not compliance dragged to an altar but a Son wanting His Father's will — the joy set before Him was how He endured the cross (Heb 12:2), and Hebrews frames its whole chapter in pleasure-vocabulary, from the offerings God "took no pleasure in" (10:6) to the shrinking-back He takes "no pleasure" in (10:38). Willingness is the floor; delight is the psalm's word. David's own willing consecration after real rescue is the historical shadow the greater David fills, not a costume He borrows.

His delight, our standing. "By THAT will we have been sanctified through the sacrifice of the body of Jesus Christ once for all" (10:10) — the will that saves is not the believer's but the Son's delighted one, so acceptance does not rise and fall with performance. When conscience says "offer again," the text answers that there remains nothing to offer (10:14, 18). And because the body was offered, the willing Christ is now the welcoming Christ: "let us draw near with a sincere heart in full assurance of faith, having our hearts sprinkled clean from an evil conscience" (10:19-22) — the same will that brought Him down holds the door open, the "new and living way through the curtain of His body."

The new song. So the psalm's frame closes over its center: the rescued one is set on rock and given "a new song… many will SEE and fear and put their trust in the LORD" (vv. 2-3) — beholding unto trusting; the risen Proclaimer announces glad tidings "in the great assembly" (vv. 9-10; Heb 2:12); and the psalm's own doxological terminus gathers everyone in: "may all who seek You rejoice and be glad in You; may those who love Your salvation always say, 'THE LORD BE MAGNIFIED!'" (v. 16) — God magnified in the gladness of the rescued. And if you cannot yet feel that gladness — if your own will drags where His delighted — hear His "Here I am, I have come" spoken for you: the will that sanctifies you was never yours to summon but His, already delighted, already offered once for all. Beholding the glad and willing Christ, we are made glad and willing in Him: transformed into His image with intensifying glory (2 Cor 3:18).

Linked Mentions 19

Intertextuality Pairs 11

Trajectory Tables 4

Anchor Texts 4

Across the network

Related Trajectory Tables

Primary thematic overlap:

TT 044 — Day of Atonement (Christ's Atoning Sacrifice) — treats the atoning-sacrifice trajectory across the canon: Levitical Day of Atonement → prophetic critique → Suffering Servant → Christ's once-for-all offering. The TT's analytical unit is the atonement-event: how does the canon develop the doctrine that a substitutionary sacrifice secures the people's standing with God? Psalm 40:6-8 is one of the texts through which the trajectory's inadequacy-contrast moment is established. This ATN, by contrast, treats Psalm 40:6-8 as a text whose canonical career is concentrated in Hebrews 10 — mapping the specific citation and its argumentative use in detail not possible in the TT.
TT 189 — The Pierced Ear (Voluntary Eternal Servanthood) — the vault's most Ps-40-saturated trajectory: its willing-servant typology sits on the Ps 40:6-8 → Heb 10:5-10 (prosopological, Promise-Fulfillment-primary) rail, with the Exod 21:6 rite held as disputed background. For the willing-servant disposition (opened ear → Gethsemane → Phil 2), go to TT 189; this ATN maps the textual career of the LXX citation itself.
TT 023 — Burnt Offering (Christ's Total Consecration) — the ʿōlâ total-consecration trajectory, in which Ps 40:6-8 is the forward pivot of the prophetic seam (1 Sam 15 → Ps 40 → Isa 1 → Hos 6). For the whole-ascent consecration the psalm's willing "Here I am" enacts, go to TT 023; the ATN maps the citation that consummates it.
TT 136 — Sacrificial System (Christ Our Sacrifice) — the whole-cultus trajectory (burnt / sin / peace offerings → prophetic critique → Christ our sacrifice), which itself marks a Ps 40:6-8 connection CRITICAL and back-links this network. For the sacrificial system the psalm relativizes, go to TT 136; this ATN maps the LXX citation that announces its surpassing.

Secondary thematic context:

TT 048 — Eden as Temple — relevant to the sacrificial-system context Psalm 40:6 critiques, insofar as the tabernacle/temple cultus the psalm relativizes is the architectural-cultic descendant of Eden's lost worship.
TT 155 — Suffering Servant — owns Isaiah 50:4-9, the third Servant Song whose morning-by-morning opened ear (Isa 50:5; §10's documented sibling IP) is the strongest Hebrew-text cousin of the MT's "ears You have dug."

Sacrifice-and-Obedience — the canonical critique-chorus (1 Sam 15:22; Hos 6:6; Mic 6:6-8; Ps 40:6-8; Jer 7:21-23; Heb 10) lacks a dedicated TT — though TT 189 (Pierced Ear) already carries the willing-servant strand of it and partially answers the gap. The trajectory from prophetic critique → psalmic announcement → apostolic consummation is well-defined and would benefit from a TT-level treatment.
Once-for-All Sufficiency — Hebrews's structural argument (rooted in Ps 40 + Ps 110) lacks a TT distinct from TT 044.
The Incarnation's Teleological Ordering to Atonement — the doctrine that Christ became incarnate in order to offer himself; rooted textually in Ps 40:6-8 + Heb 10:5-10.

The complementary relationship: for the atonement trajectory, go to TT 044. For Psalm 40:6-8's textual career — how Hebrews specifically deploys the LXX form to anchor the once-for-all argument — come here.

Related Anchor Texts

Other anchor texts in the same theological orbit — the atonement-and-willing-obedience network:

Isaiah 52:13-53:12 — The Suffering Servant — the principal OT prefiguration of the vicarious atoning sacrifice. Where Ps 40:6-8 supplies the Son's willing-obedience-in-prepared-body incarnational mission statement, Isa 53 supplies the substitutionary-suffering and justification-of-many content of that mission. The two texts are theological partners: Ps 40 anchors the willing entry into the body; Isa 53 anchors what is accomplished in the body. Hebrews assumes both.
Jeremiah 31:31-34 — The New Covenant — the new-covenant promise Hebrews cites at length in 8:8-12 and again at 10:16-17, immediately after the Ps 40:6-8 citation. Heb 10's structure is: Ps 40:6-8 cited (vv. 5-9) → once-for-all offering declared (vv. 10-14) → Jer 31:33-34 cited (vv. 15-18) → "He takes away the first that He may establish the second" applied to old/new covenants. The two anchor texts are deliberately paired in Hebrews 10 to demonstrate that the Son's once-for-all offering inaugurates the new covenant.
Exodus 24:8 — The Blood of the Covenant — the OT moment when blood seals covenant; Hebrews 9:18-22 cites it as the covenant-inaugurating-by-blood pattern that Christ's offering consummates. Ps 40:6-8 (willing-obedience-in-body) + Exod 24:8 (covenant-blood) + Jer 31:31-34 (new-covenant promise) form a three-text scaffold for Hebrews's atonement-and-covenant theology.
Psalm 22 — My God, My God, Why Hast Thou Forsaken Me — the prosopological cousin. Both psalms place Davidic first-person speech on the lips of Christ; Ps 22 anchors the cross-cry, Ps 40 anchors the incarnational entry. Together with Ps 110 (Father-to-Son), the three psalms form Hebrews's prosopological pillar of Christology: Ps 40 (Son's entry) → Ps 22 (Son's suffering and praise) → Ps 110 (Son's exaltation).
Deuteronomy 17:14-20 — The Law of the King — the "scroll of the book" partner (§3): the king's Deuteronomic charge to write and internalize Torah is the likeliest referent of Ps 40:7's scroll, and Ps 40:8's "Your law is within my heart" is that charter kept from the heart. That ATN cites this anchor for the Torah-within thread; the link is now reciprocal.

Critical Citations

The two citations in this network are both Critical, owing to the network's density-to-weight inversion. The first carries the foundational warrant; the second performs the doctrinal operation the first authorizes.

#	Citation	Why Critical
1	Hebrews 10:5-7	THE foundational text. Without Ps 40:6-8 read as Christ's incarnational speech (in the LXX form), the Hebrews 10 argument for the once-for-all sufficiency of Christ's atonement has no textual ground. The citation establishes (a) that the Father has prepared a body for the Son's incarnational mission, (b) that the Son's willing-obedience is the thing this body is for, (c) that this willing-obedience is what the OT sacrificial system always pointed toward and could never enact. The entire epistle's atonement-sufficiency theology rests on this citation. It operates by alternate text-form dependence + prosopological assignment + direct citation at once — one of the canon's clearest LXX-dependent NT arguments.
2	Hebrews 10:5-9	The doctrinal operation the citation performs. The author parses the citation into two clauses ("sacrifice and offering You did not desire" / "Behold, I have come to do Your will") and declares: "He takes away the first that He may establish the second." This is the formal abrogation of the Levitical sacrificial system on textual warrant supplied by the Davidic-Christic voice of Psalm 40. The chapter immediately applies the abrogation: "By that will we have been sanctified through the sacrifice of the body of Jesus Christ once for all" (10:10). The "body" of v. 10 is the "body You have prepared" of v. 5 — and the once-for-all offering is the consummation of the willing-obedience announced in v. 7.