1 John 1:8-10

New Revised Standard Version Catholic Edition

⁸ If we say that we have no sin, we deceive ourselves, and the truth is not in us. ⁹ If we confess our sins, he who is faithful and just will forgive us our sins and cleanse us from all unrighteousness. ¹⁰ If we say that we have not sinned, we make him a liar, and his word is not in us.