Romans 1:3 → 2 Samuel 7:12

Paul opens Romans by defining the gospel he was set apart for as the gospel concerning God's Son, "who was a descendant of David according to the flesh" (Rom 1:3). The phrase deliberately alludes to the Davidic covenant of 2 Samuel 7:12 — "I will raise up your descendant after you, who will come from your own body, and I will establish his kingdom" — the foundational oath that an offspring of David would hold an everlasting throne. By stressing that this gospel was "promised beforehand through His prophets in the Holy Scriptures" (Rom 1:2), Paul frames Christ's Davidic descent as the keeping of a long-standing promise, not a new development: Jesus is the seed in whom the covenant to David comes due. The connection is promise-fulfillment, the maturing of the Seed-and-Offspring trajectory that runs from Genesis 3:15 through Abraham and David to its messianic terminus. The pairing with v. 4 is essential: the Son who is David's seed "according to the flesh" was "declared with power to be the Son of God by His resurrection from the dead" — so the Davidic king is shown to be more than David's son, vindicated and enthroned through resurrection (cf. Ps 110; Acts 2:30-36). The savoring is that the One promised to David is desirable beyond the hope of a national throne: He is the resurrected Son of God whose reign secures the obedience of faith among all the Gentiles (Rom 1:5), so that the covenant with David becomes the gospel for the world.