Acts 3:25 → Genesis 12:3

Peter climaxes his sermon with the foundational promise: “Through your offspring all the families of the earth will be blessed” (Acts 3:25, drawing on Genesis 12:3; 18:18; 22:18; 26:4; 28:14). The Abrahamic covenant was never merely national — from the first it reached toward “all the families of the earth,” the whole world under the curse of Babel to be blessed through Abraham’s line. Peter identifies who the promised “offspring” is: “When God raised up His Servant, He sent Him first to you to bless you by turning each of you from your wicked ways” (3:26). The blessing promised to the nations is nothing less than Jesus Himself, and the form it takes is repentance and forgiveness — the reversal of Adam’s curse. Here the whole trajectory of the Old Testament is disclosed: the promise to Abraham was a gospel preached beforehand (Galatians 3:8), and its fulfillment is the risen Christ, in whom the scattered families of the earth are gathered into one blessed people. To be blessed in Him is to be turned from wickedness to God — the sweetest form the ancient promise could take.