James 2:18-21

Yea, a man will say, Thou hast faith, and I have works: show me thy faith apart from thy works, and I by my works will show thee my faith. Thou believest that God is one; thou doest well: the demons also believe, and shudder. But wilt thou know, O vain man, that faith apart from works is barren? Was not Abraham our father justified by works, in that he offered up Isaac his son upon the altar?