James 2:14, 19-20

What is the benefit, my fellow believers, if someone claims to have faith but has no [good] works [as evidence]? Can that [kind of] faith save him? [No, a mere claim of faith is not sufficient—genuine faith produces good works.]

You believe that God is one; you do well [to believe that]. The demons also believe [that], and shudder and bristle [in awe-filled terror—they have seen His wrath]! [Deut 6:4; 11:13-21; Mark 12:29] But are you willing to recognize, you foolish [spiritually shallow] person, that faith without [good] works is useless?