Introduction
This apostolic letter speaks authoritatively about the truth of the incarnation—a message his doubting readers needed after hearing false teachers deny the full divinity and humanity of Christ. It reaffirms the core of Christianity, saying that either we exhibit the sound doctrine, obedience, and love that characterize all Christians, or else we are not true Christians. When all the basics of faith are in operation, we not only know joy but can live a holy life and be assured of salvation (3:19, 24)—even though we are still far from perfect (1:9). This assurance comes especially as we find ourselves learning to “love one another” as brothers and sisters in Christ (4:7–8). This general letter to congregations across Asia Minor (now Turkey) was probably written by the apostle John in the late first century a.d.
1 aThat which was bfrom the beginning, cwhich we have heard, dwhich we have seen with our eyes, ewhich we looked upon and fhave touched with our hands, concerning the word of life— 2 gthe life hwas made manifest, and we have seen it, and itestify to it and proclaim to you the eternal life, awhich was with the Father and hwas made manifest to us— 3 cthat which we have seen and heard we proclaim also to you, so that you too may have fellowship with us; and indeed jour fellowship is with the Father and with his Son Jesus Christ. 4 And we are writing these things so kthat our1 joy may be complete.
5 lThis is the message we have heard from him and proclaim to you, that mGod is light, and in him is no darkness at all. 6 nIf we say we have fellowship with him while we walk in darkness, we lie and odo not practice the truth. 7 But pif we walk in the light, qas he is in the light, we have fellowship with one another, and rthe blood of Jesus his Son cleanses us from all sin. 8 sIf we say we have no sin, we deceive ourselves, and tthe truth is not in us. 9 uIf we confess our sins, he is vfaithful and just to forgive us our sins and rto cleanse us from all unrighteousness. 10 If we say we have not sinned, wwe make him a liar, and xhis word is not in us.