1 John 1:5-7

5 And this is the declaration which we have heard from him and declare unto you: That God is light and in him there is no darkness.

6 If we say that we have fellowship with him and walk in darkness, we lie and do not the truth.

7 But if we walk in the light, as he also is in the light, we have fellowship one with another: And the blood of Jesus Christ his Son cleanseth us from all sin.