James 2:21-25

Was not Abraham our father justified by works, in that he offered up Isaac his son upon the altar? Thou seest that faith wrought with his works, and by works was faith made perfect; and the scripture was fulfilled which saith, And Abraham believed God, and it was reckoned unto him for righteousness; and he was called the friend of God. Ye see that by works a man is justified, and not only by faith. And in like manner was not also Rahab the harlot justified by works, in that she received the messengers, and sent them out another way?