Romans 3:25 → Leviticus 17:11

"God presented Him as the atoning sacrifice through faith in His blood, in order to demonstrate His righteousness" (Rom 3:25). Paul's propitiation-Christology fuses two Levitical anchors: the ἱλαστήριον (the mercy seat of Leviticus 16 — the term whose citation-grade lexical anchor sits at Leviticus 16:15, where blood is brought to the mercy seat — the where of atonement) and the life-in-blood rationale of Leviticus 17:11 (the why of atonement, a conceptual rather than verbal tie). The decisive phrase "through faith in His blood" (ἐν τῷ αὐτοῦ αἵματι) is unintelligible apart from Lev 17:11: blood propitiates because the life is in the blood, and the life is what God accepts in the worshipper's place. The connection is typological — the Levitical sin offerings whose blood was carried to the altar and mercy seat (Lev 16-17) prefigure Christ, with the requisite escalation supplied by the dignity of the life offered: animal blood that covered provisionally yields to the blood of the incarnate Son that propitiates definitively, the antitype read back into the type by Paul's argument. It is at the same time a movement along the canon-wide Sacrifice and Atonement trajectory. Romans 3:25 also answers the deepest tension in the doctrine of God: how the just God can justify the guilty. Lev 17:11 supplies the mechanism — a life given for a life — and the cross executes it, so that God is shown "just and to justify the one who has faith in Jesus" (Rom 3:26). The telos is not a colder doctrine of wrath but a warmer sight of grace: the blood that propitiates is the Son's own desirable life poured out, the once-for-all answer the whole sacrificial system longed to give and never could.