Galatians 3:19-22

What then is the law? It was added because of transgressions, till the seed should come to whom the promise hath been made; and it was ordained through angels by the hand of a mediator. Now a mediator is not a mediator of one; but God is one. Is the law then against the promises of God? God forbid: for if there had been a law given which could make alive, verily righteousness would have been of the law. But the scripture shut up all things under sin, that the promise by faith in Jesus Christ might be given to them that believe.