1 John 1:8-10

Revised Standard Version Catholic Edition

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