It means absolutely nothing to profess
Christ if your life doesn’t back it up.
Psalms 19:14
“Let the words of my mouth and the meditation of my heart Be acceptable in Your sight, O Lord, my strength and my Redeemer.”
https://www.christianity.com/wiki/christian-life/do-actions-really-speak-louder-than-words.html
1 John 3:18: Dear children, let us not love with words or speech but with actions and in truth. While you can’t make a claim that this proverb comes from Scripture, there is clear evidence that God puts priority not just on what you say, but also on what you do.