Context: Jeremiah 31:34 is the climactic sentence of the Hebrew Bible's most explicit new-covenant oracle (Jer 31:31-34). Delivered in the shadow of the Babylonian exile — when the temple's destruction had interrupted the chattat system and the Mosaic covenant had collapsed under Israel's covenant-breaking — Jeremiah announces that Yahweh will make "a new covenant, not like the covenant that I made with their fathers" (vv. 31-32). The oracle names three escalations: (1) the Torah will be written on hearts rather than stone (v. 33); (2) covenant knowledge will be universal and immediate rather than mediated by teachers (v. 34a); and (3) — the decisive climax — "For I will forgive their iniquity, and I will remember their sin no more" (v. 34b). The final clause is a verbal divine commitment, first-person performative speech (אֶסְלַח...לֹא אֶזְכָּר־עוֹד, eslach...lo ezkar-od) — YHWH pledging a forgiveness without remainder. Within the scope of TT 147 this verse is the decisive promise-anchor: what the chattat could only enact ritually — covering sin that nevertheless required annual re-covering — Jeremiah promises will be accomplished permanently. Exile had proved the sacrificial system alone could not produce the internal transformation the covenant demanded; a new covenant is required, and its signature mark is forgiveness-without-remainder.
Hebrew Key Terms:
OT-to-OT Development: Jeremiah 31:34 stands downstream of a trajectory of OT forgiveness-language that the chattat system enacted but never permanently secured. The foundational promise runs through Exodus 34:6-7 (YHWH "forgiving iniquity and transgression and sin"), develops through the priestly formulas of Leviticus 4-5 ("and he shall be forgiven", wenislaḥ lo), and reaches its prophetic ceiling in Isaiah's servant oracles and Ezekiel's new-heart promise (Ezek 36:25-27). The distinctive feature of Jer 31:34 is the finality clause: lo ezkar-od, "I will remember no more." This goes beyond prior forgiveness language — even the Day of Atonement required annual re-enactment (Heb 10:3 calls it "a reminder of sins every year"), whereas Jeremiah promises a forgiveness that God Himself undertakes never to recall. Isaiah 43:25 ("I, I am he who blots out your transgressions for my own sake, and I will not remember your sins") is the closest OT parallel; Jeremiah's oracle builds on that stream and makes it the constitutive feature of the coming new covenant.
Connections:
Christological Connection: Jeremiah's oracle is not typology in the first instance but verbal promise — a divine first-person commitment uttered in prophetic speech. The promise has content (forgiveness, non-remembrance of sin) and contingency (a new covenant in which this is accomplished). Because the oracle is a verbal commitment, its fulfillment must likewise be verbal and historical: a moment at which God actually enacts what he here promises. The chattat system could symbolize such forgiveness but could not achieve it — annual repetition proved that the blood of bulls and goats could not finally take away sins (Heb 10:4).
Hebrews 10:16-18 quotes Jeremiah 31:33-34 at the climactic juncture of the once-for-all argument, and the author draws the inescapable conclusion: "Where there is forgiveness of these, there is no longer any offering for sin" (v. 18). The logic is binding: if God has promised to remember sin no more, and if that promise has in fact been enacted in Christ's once-for-all sacrifice, then the chattat system is definitively ended — not as wrong but as fulfilled. Christ's blood inaugurates the new covenant (Luke 22:20) and thereby purchases the forgiveness Jeremiah promised. The promise to Jeremiah is fulfilled in the chattat that ended all chattats.
The already/not-yet dimension runs through the verse's New Testament afterlife. Believers already enjoy forgiveness and the assurance that God has bound himself not to remember their sins — "there is therefore now no condemnation for those who are in Christ Jesus" (Rom 8:1). Yet the consummated vision of the promise — a people who all know the Lord from the least to the greatest, sin not merely forgiven but no longer even possible — awaits the new creation (Rev 21:3-4, 27). What Jeremiah announced in verbal promise, Christ has secured in historical fact, and the church now lives between inauguration and consummation — forgiven in truth, awaiting the day when sin's shadow is gone forever.
Connection Method(s): Promise-Fulfillment (primary) — Jeremiah 31:34 is a verbal divine oracle of forgiveness and non-remembrance, explicitly quoted in Hebrews 10:17-18 as fulfilled in Christ's once-for-all offering. The oracle meets the classical criteria for Promise-Fulfillment: a verbal divine commitment with specifiable content, awaiting historical enactment, which the NT identifies as arrived in Christ. The anti-default check confirms this is Promise-Fulfillment rather than typology — Jeremiah is not prefiguring but promising. Also Longitudinal Theme — the verse is a load-bearing node in the Covenant and Sacrifice and Atonement threads, linking the Sinai covenant's forgiveness provisions (Exod 34:6-7; Lev 4-5) to the new covenant's finality. Also Contrast (secondary) — the promise implicitly contrasts Mosaic covenant incompleteness with new-covenant finality: what was covered annually will be remembered no more.
Trajectory Table: 147 - Sin Offering (Christ Bearing Our Sins)