James 1:22-24, 26

But be doers of the word, and not hearers only, deceiving yourselves. For if anyone is a hearer of the word and not a doer, he is like a man observing his natural face in a mirror; for he observes himself, goes away, and immediately forgets what kind of man he was.

If anyone among you thinks he is religious, and does not bridle his tongue but deceives his own heart, this one’s religion is useless.