Hebrew Key Terms:
Context: Jeremiah 31:31-34 sits at the heart of the "Book of Consolation" (Jeremiah 30-33), a discrete oracle collection that reverses the judgment-dominant tone of the surrounding chapters to announce restoration. The oracle is addressed to both "the house of Israel and the house of Judah" — re-uniting the divided kingdom theologically in the promise itself. Jeremiah delivers this word during or just after Jerusalem's fall (the surrounding context includes the 587 BC siege), when the Sinai covenant appears catastrophically broken. God's astonishing response: not a restoration of the old covenant but inauguration of a qualitatively "new" one (בְּרִית חֲדָשָׁה, berit chadashah — the only occurrence of this exact phrase in the Hebrew Bible). The new covenant's differentiating marks are four: (1) internal inscription — law written on hearts, not stone tablets (v. 33); (2) intimate covenantal relationship — "I will be their God, they shall be my people" (v. 33); (3) universal covenantal knowledge — "they shall all know me, from the least of them to the greatest" (v. 34); (4) definitive forgiveness — "I will forgive their iniquity, and I will remember their sin no more" (v. 34). The passage is spoken into the exile and addressed to its hope. It is quoted in full by Hebrews 8:8-12 — the longest single OT quotation in the NT.
OT-to-OT Development: The new-covenant promise develops multiple earlier OT threads. Deuteronomy 30:6's promise that God would "circumcise your heart" anticipates the heart-inscription of Jeremiah 31. Ezekiel's contemporaneous oracles develop parallel imagery: Ezekiel 11:19-20 and Ezekiel 36:26-27 promise a "new heart" and "new spirit" replacing the "heart of stone" — the same inner-transformation promise in different vocabulary. Jeremiah 32:40 speaks of an "everlasting covenant" with God putting "the fear of me in their hearts." Isaiah 54:13 promises "all your children shall be taught by the LORD" — echoing "they shall all know me." Joel 2:28-32's Spirit-outpouring promise and Ezekiel 37's resurrection-valley vision round out the prophetic portrait of the new-covenant era. The promise is not abolition of Torah but its relocation — from external tablets to internal heart, from mediated instruction to direct knowledge of God.
Connections:
Christological Connection: Jeremiah 31:31-34 announces the covenantal structure within which all Christian existence takes place. The old covenant — for all its genuine gifts — had a structural limitation: its commands were external, its enforcement dependent on human faithfulness, its promise of forgiveness anticipatory rather than definitive. The new covenant resolves each limitation at its root. Its law is internalized, not imposed; its relationship is direct, not mediated through ongoing sacrificial repetition; its knowledge is universal within the covenant community; and its forgiveness is definitive — sin "remembered no more."
Christ inaugurates this covenant in his blood. At the Last Supper, holding the cup, Jesus declares: "This cup that is poured out for you is the new covenant (ἡ καινὴ διαθήκη) in my blood" (Luke 22:20; cf. 1 Corinthians 11:25) — the single most direct claim in the Gospels to fulfill Jeremiah 31. Where Moses had ratified the old covenant by sprinkling blood on the people with "Behold, the blood of the covenant" (Exodus 24:8), Jesus ratifies the new covenant with his own blood. Hebrews 8-10 develops this at length: Christ is the mediator of a better covenant (8:6), established on better promises (8:6), sealed by a better sacrifice (9:11-14), producing a better forgiveness (10:17-18). The quotation of Jeremiah 31 in Hebrews 8:8-12 — the NT's longest OT quotation — structurally anchors the argument. The very act of calling this covenant "new" (v. 13), Hebrews argues, declares the first "obsolete" (πεπαλαίωκεν).
The escalation from promise to fulfillment is comprehensive. Law-on-hearts is actualized by the Spirit: "the love of God has been poured into our hearts through the Holy Spirit who has been given to us" (Romans 5:5). Direct knowledge of God is inaugurated: "you have been anointed by the Holy One, and you all have knowledge" (1 John 2:20). Definitive forgiveness is accomplished: "he has appeared once for all at the end of the ages to put away sin by the sacrifice of himself" (Hebrews 9:26). The already is decisive: believers are in the new covenant by union with Christ. The not-yet is eschatological fullness: when we see him face to face, knowing as we are known (1 Corinthians 13:12), "they shall all know me" will achieve its final register.
Connection Method(s): Promise-Fulfillment (primary) — Jeremiah 31:31-34 is a formal, verbal covenantal promise from God. Christ's self-identification with this covenant at the Last Supper and Hebrews' extended exposition make this the clearest promise-fulfillment text in the exile trajectory. Also Redemptive-Historical Progression — The passage marks the pivotal transition from old covenant to new covenant within the canonical narrative; the entire redemptive storyline pivots on this promise's arrival in Christ. Also Longitudinal Theme — The "covenant" motif is one of the vault's canon-wide Longitudinal Themes, with Jeremiah 31 functioning as a keystone text. Anti-default: not typology. The old covenant is not a "type" of the new in the strict sense; their relationship is promise-to-fulfillment and provisional-to-definitive within one covenant-of-grace framework. Hebrews argues the old's inadequacy (Contrast) secondarily, but the primary category is promised covenant now inaugurated.
Trajectory Table: 011 - Babylonian Exile (Judgment and Discipline)