1 John 2:3–5
3 Now by this we know that we know Him, if we keep His commandments. 4 He who says, “I know Him,” and does not keep His commandments, is a liar, and the truth is not in him. 5 But whoever keeps His word, truly the love of God is perfected in him. By this we know that we are in Him.
Proverbs 23:7 “For as he thinks in his heart, so is he. ‘Eat and drink!’ he says to you, but his heart is not with you.”
Walk the talk.