You’re deceiving yourself, when you only hear the word, but not do what it say.

It’s as if you forgot it.

James 1:22-24 (KJV) – but be ye doers of the word, and not hearers only, deceiving your own selves. For if any be a hearer of the word, and not a doer, he is like unto a man beholding his natural face in a glass: for he beholdeth himself, and goeth his way, and straightway forgetteth what manner of man he was.