If we confess our sins, he is faithful and righteous to forgive us the sins, and to cleanse us from all unrighteousness.

 1:6-7 If we say that we have fellowship with him and at the same time walk in darkness, we lie and are not doing the truth. But if we walk in the light, as he is in the light, we have fellowship with each other and the blood of Jesus Christ is steadily cleansing us from all sin. 