3 He whom we have seen and heard, we announce to you, so that you, too, may have fellowship with us, and so that our fellowship may be with the Father and with his Son Jesus Christ.
4 And this we write to you, so that you may rejoice, and so that your joy may be full.
5 And this is the announcement which we have heard from him, and which we announce to you: that God is light, and in him there is no darkness.
6 If we claim that we have fellowship with him, and yet we walk in darkness, then we are lying and not telling the truth.
7 But if we walk in the light, just as he also is in the light, then we have fellowship with one another, and the blood of Jesus Christ, his Son, cleanses us from all sin.
8 If we claim that we have no sin, then we are deceiving ourselves and the truth is not in us.
9 If we confess our sins, then he is faithful and just, so as to forgive us our sins and to cleanse us from all iniquity.