Rom 3:21-26. God’s justifying righteousness through faith in Jesus Christ, alike adapted to our necessities and worthy of himself.
But now the righteousness of God - (See on Rom 1:17).
without the law - that is, a righteousness to which our obedience to the law contributes nothing whatever (Rom 3:28; Gal 2:16).
is manifested, being witnessed - attested.
by the law and the prophets - the Old Testament Scriptures. Thus this justifying righteousness, though new, as only now fully disclosed, is an old righteousness, predicted and foreshadowed in the Old Testament.