1 John 1:6-8

6If we claim to have fellowship with him and yet walk in the darkness, we lie and do not live out the truth.

7But if we walk in the light, as he is in the light, we have fellowship with one another, and the blood of Jesus, his Son, purifies us from all Or every sin. 8If we claim to be without sin, we deceive ourselves and the truth is not in us.