Romans 4:1-5

1 What then will we say that Abraham, our forefather, has found according to the flesh?  2 For if Abraham was justified by works, he has something to boast about, but not toward God.  3 For what does the Scripture say? "Abraham believed God, and it was accounted to him for righteousness."  4 Now to him who works, the reward is not counted as grace, but as debt.  5 But to him who doesn't work, but believes in him who justifies the ungodly, his faith is accounted for righteousness.