ISB ~ Romans 1 v3
concerning his Son:In the translation, this phrase modifies “the gospel” of v. 1. It can also modify “the holy Scriptures” of v. 2. The latter option would suggest that Paul had specific OT passages about the “Son” in mind.
• Two passages fit the description: 2 Sam 7:14 and Ps 2:7, which both refer to a Davidic ruler. In ancient Israel, the kings in David’s line were designated the “sons” of Yahweh by a decree of royal adoption on the day of their enthronement. Paul sees this pattern elevated to a new level on Easter morning, when the Davidic humanity of Jesus was anointed for eternal kingship and made to share in the glory of his divine Sonship (Acts 13:33-34). This event, culminating in the enthronement of Jesus in heaven, fulfilled Yahweh’s covenant oath to establish the royal throne of David for ever (Ps 89:3-4; 132:11; Lk 1:32-33; Acts 2:29-36).