Is he the God of the Jews only? is he not also of the Gentiles? Yes, of the Gentiles also:
All Commentaries on Romans 3:29 Go To Romans 3
John Chrysostom
AD 407
Paul shows that the Jews, by trying to put the Gentiles in their place, were insulting God’s glory by not allowing him to be the God of all. But if God is God of all, then he takes care of all, and if he takes care of all, then he saves all alike by faith.