ISB ~ Acts 17 v7

another king:The unstated assumption is that the expected Messiah (“the Christ”, 17:3) was to come from the royal line of David and restore his glorious kingdom (2 Sam 7:1217; Mk 11:10). Here the proclamation of Christ’s kingship is heard as a political threat to Rome and a direct challenge to the imperial rule of Caesar Claudius (A.D. 41-54). From the perspective of the NT, this was a misunderstanding: although Christ demands the highest allegiance of every believer, his universal rule over the world is not of the world (Jn 18:36), so his heavenly kingship does not eliminate the need for earthly rulers to govern the temporal affairs of human society (Rom 13:1; 1 Pet 2:17).

See essay:Kingdom Restoration at Acts 15.