1 John 1:8-10

Complete Jewish Bible

⁸ If we claim not to have sin, we are deceiving ourselves, and the truth is not in us. ⁹ If we acknowledge our sins, then, since he is trustworthy and just, he will forgive them and purify us from all wrongdoing.

¹⁰ If we claim we have not been sinning, we are making him out to be a liar, and his Word is not in us.