5This is the message that we have heard from him and announce to you: "God is light and there is no darkness in him at all."6If we claim, "We have fellowship with him," and live in the darkness, we are lying and do not act truthfully.7But if we live in the light in the same way as he is in the light, we have fellowship with each other, and the blood of Jesus, his Son, cleanses us from every sin.8If we claim, "We don't have any sin," we deceive ourselves and the truth is not in us.9But if we confess our sins, he is faithful and just to forgive us our sins and cleanse us from everything we've done wrong.10If we claim, "We have never sinned," we make him a liar and his word is not in us.
1My little children, I'm writing these things to you so that you don't sin. But if you do sin, we have an advocate with the Father, Jesus Christ the righteous one.2He is God's way of dealing with our sins, not only ours but the sins of the whole world.3This is how we know that we know him: if we keep his commandments.4The one who claims, "I know him," while not keeping his commandments, is a liar, and the truth is not in this person.5But the love of God is truly perfected in whoever keeps his word. This is how we know we are in him.6The one who claims to remain in him ought to live in the same way as he lived.