Light and Darkness, Sin and Forgiveness

⁵ This is the message we have heard^(A) from him and declare to you: God is light;^(B) in him there is no darkness at all. ⁶ If we claim to have fellowship with him and yet walk in the darkness,^(C) we lie and do not live out the truth.^{(D) 7} But if we walk in the light,^(E) as he is in the light, we have fellowship with one another, and the blood of Jesus, his Son, purifies us from all^[a] sin.^(F)

¹³ But everything exposed by the light^(A) becomes visible—and everything that is illuminated becomes a light.