And this is the message which we have heard from him and announce to you, that God is light and there [is] no darkness in him at all.
References for 1 John 1:5
If we say that we have fellowship with him and walk in the darkness, we lie and do not practice the truth.
References for 1 John 1:6
But 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 cleanses us from all sin.
If we say that we do not have sin, we deceive ourselves and the truth is not in us.
If we confess our sins, he is faithful and just, so that he will forgive us [our] sins and will cleanse us from all unrighteousness.
References for 1 John 1:9
If we say that we have not sinned, we make him a liar, and his word is not in us.