Romans 3:27

"Where is boasting then? It is excluded. By what law? of works? Nay:  but by the law of faith."

Romans 3:28

"Therefore we conclude that a man is justified by faith without the deeds of the law."

Romans 4:5

"But to him that worketh not, but believeth on him that justifieth the ungodly, his faith is counted for righteousness."