Context: Psalm 40 is a Davidic psalm of thanksgiving that turns to renewed petition: David recounts deliverance from "the pit of despair" (vv. 1-3), blesses the man who trusts the LORD (vv. 4-5), and then — at the psalm's hinge — declares what his deliverance requires of him: "Sacrifice and offering You did not desire, but my ears You have opened. Burnt offerings and sin offerings You did not require" (v. 6). The word rendered "sin offerings" is חֲטָאָה (chata'ah), the very institution legislated in Leviticus 4-5; David, the worshiper under the Levitical economy, confesses under inspiration that the chattat is not what God ultimately requires. What God desires instead is the worshiper himself: "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. 7-8). The idiom "my ears You have opened" is literally "ears You have dug (כָּרָה) for me" — God has created the capacity to hear and obey, so that obedient self-offering replaces, or rather fulfills, the animal substitute. This is not anti-cultic polemic (David elsewhere offers sacrifice gladly, e.g., 2 Sam 6:17-18; 24:25); it is the psalmic interiorization of the cult — the OT itself confessing, from within the sacrificial system, that the system is penultimate. The "scroll" (מְגִלָּה) most naturally refers to the written Torah, especially the law of the king (Deut 17:18-20): the Davidic king presents himself as the obedient covenant servant whose heart-internalized law is what the sacrifices always pointed toward.
Hebrew Key Terms:
Greek Key Terms (LXX/NT):
OT-to-OT Development: Psalm 40:6-8 stands within a sustained OT-internal chorus that relativizes sacrifice in favor of obedience without abolishing the cult. Samuel had already told Saul, "to obey is better than sacrifice" (1 Sam 15:22). David himself presses further in Psalm 51:16-17: "You do not delight in sacrifice... The sacrifices of God are a broken spirit; a broken and a contrite heart, O God, You will not despise." The prophets take up the theme: Isaiah 1:11 ("What good to Me is your multitude of sacrifices?"), Jeremiah 7:22-23 (the exodus command was "obey My voice," not merely offer), and Hosea 6:6 ("For I desire mercy, not sacrifice"), which Jesus cites twice (Matt 9:13; 12:7). Psalm 40's distinctive contribution to this chorus is that the obedience God desires is embodied in a royal speaker who steps forward — "Here I am, I have come" — with the law within his heart, anticipating Jeremiah 31:33's new-covenant promise of the law written on the heart.
Connections:
Christological Connection: In its own context, Psalm 40:6-8 teaches that the sacrificial system — including the chattat — was never God's terminal desire. The fourfold catalogue of v. 6 (sacrifice, offering, burnt offering, sin offering) spans the whole Levitical institution, and of all of it David says: not desired, not required. What God requires is a hearing ear and a willing heart — the worshiper himself, with the Torah internalized, presenting himself: "Here I am, I have come." This is the OT's own confession, from the lips of its anointed king, that animal blood was provisional: a divinely given shadow whose very design awaited a person who could offer what no animal can — intelligent, willing, covenantal obedience. Yet the psalm also exposes a problem it cannot resolve: the same David who says "Your law is within my heart" confesses six verses later that "my sins have overtaken me... they are more than the hairs of my head" (v. 12). The psalm's speaker aspires to an obedient self-offering that David himself cannot finally render.
Hebrews 10:5-10 resolves the tension by identifying the psalm's true speaker: "Therefore, when Christ came into the world, He said: 'Sacrifice and offering You did not desire, but a body You prepared for Me'" (Heb 10:5, quoting LXX Ps 39:7). The LXX's σῶμα ("a body You prepared") renders the Hebrew's dug-out ears as the whole incarnate person — and Hebrews seizes this as the hinge of its once-for-all argument: the body the Father prepared for the Son in the incarnation is the chattat that ends all chattats. The author's exegesis is precise: "He takes away the first to establish the second" (10:9) — the first (the animal sacrifices God "did not desire") is removed by the second (the obedient will embodied in Christ). The conclusion is the trajectory's keystone: "And by that will, we have been sanctified through the sacrifice of the body of Jesus Christ once for all (ἐφάπαξ)" (10:10). The escalation is total: David offered words of willing obedience while his sins overtook him; Christ offered the obedience itself — active obedience ("I delight to do Your will") consummated in the passive obedience of the cross (Matt 26:39) — in a sinless body prepared for precisely that purpose. What Psalm 40 confessed (the chattat is not ultimately required) and what it aspired to (an obedient self-offering) converge in the one offering that is both perfect obedience and perfect sacrifice.
Already/not-yet: the obedient self-offering has been rendered ἐφάπαξ — believers "have been sanctified" (Heb 10:10, perfect tense) and need never supplement the finished chattat. In the church age, the psalm's pattern is reproduced derivatively in believers who, by the Spirit, present their own bodies as "a living sacrifice" (Rom 12:1) — not atoning, but answering the law now written on new-covenant hearts (Jer 31:33; Heb 10:16). At the consummation, the psalm's "Here I am, I have come" finds its final echo when the One whose body was prepared appears a second time, "not to deal with sin but to save those who are eagerly waiting for him" (Heb 9:28).
Connection Method(s): Typology (Direct, Forward-Looking) — David, the anointed king presenting himself in willing obedience as what the sacrifices pointed toward, prefigures the greater Son whose obedient self-offering actually replaces the cult. All five characteristics verified: (1) analogical correspondence — royal speaker offering willing obedience in place of animal sacrifice (essential feature, not incidental detail); (2) historicity — David's historical worship and Christ's historical incarnation and death; (3) escalation — aspiration to obedience (overtaken by his own sins, v. 12) → sinless obedience rendered in a body divinely prepared; words of consecration → the ἐφάπαξ sacrifice itself; (4) pointing-forwardness — the OT indicator is built into the text: the psalm itself declares the chattat "not required" while no adequate substitute yet exists within the Levitical economy, and the LXX's σῶμα sharpens the forward trajectory before the NT; (5) retrospective interpretation — Hebrews 10:5-10 places the psalm on Christ's lips at his entrance into the world, making the connection explicit and canonical. Anti-default check: this is not mere Analogy (Hebrews does not say Christ's obedience is like David's — it identifies Christ as the psalm's speaker, escalating type into fulfillment), and not Promise-Fulfillment (the psalm makes no verbal promise; it enacts a pattern). Also Contrast — the passage's internal logic is contrastive: sacrifices not desired versus the obedient prepared body; Hebrews exploits exactly this contrast ("He takes away the first to establish the second"), though as shadow/substance rather than reversal. Also Longitudinal Theme — the text is a keystone in the canon-wide Sacrifice and Atonement theme, within the obedience-over-sacrifice chorus running from 1 Samuel 15:22 through Psalm 51, Isaiah 1, Jeremiah 7, and Hosea 6:6 to Hebrews 10.
Trajectory Table: 147 - Sin Offering (Christ Bearing Our Sins)