Genesis 22:17-18 → Genesis 3:15

The Aqedah blessing fuses the victory-language of the protoevangelium with the seed-promise. "Your descendants (זַרְעֲךָ, zarʿăkā) will possess the gates of their enemies. And through your offspring all nations of the earth will be blessed" (Gen 22:17-18; the Hebrew suffix on "enemies" is singular — "his enemies") takes the singular-collective "seed" of Genesis 3:15 and gives it conquering force: the seed will possess the gate of his enemies, an idiom for decisive military triumph that corresponds to the head-crushing of Eden. The pronoun "his enemies" (the seed's enemies) reads naturally as a collective's singular concord — an index of the line, not a proof of one person; the identification of the one Descendant is made by the canon's own subsequent narrowing (Gen 21:12; 49:10; 2 Sam 7:12-16), which Paul reads christologically at Galatians 3:16 (where his quoted lemma is the land-grant formula of Gen 13:15/17:8/24:7, not this verse). So the Eden enmity and the Eden seed are here drawn together: the woman's seed who crushes the serpent's head is the same Abrahamic seed who takes the gate of his foes and blesses the nations. The escalation moves from a promise pronounced over a defeated serpent to a covenant sworn by God's own oath after the offering of Isaac. The telos is the trustworthiness of the conquering Seed: because the victory rests on God's oath rather than human strength, the believer's confidence that the serpent will be crushed is as unshakable as the God who cannot lie — and the conquest is sweet because it ends in blessing for all who are in the Seed.