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1 John 1

KJV · Chapter 1/5

1That which was from the beginning, which we have heard, which we have seen with our eyes, which we have looked upon, and our hands have handled, of the Word of life;

2(For the life was manifested, and we have seen it, and bear witness, and shew unto you that eternal life, which was with the Father, and was manifested unto us;)

3That which we have seen and heard declare we unto you, that ye also may have fellowship with us: and truly our fellowship is with the Father, and with his Son Jesus Christ.

4And these things write we unto you, that your joy may be full.

5This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all.

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

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

8If we say that we have no sin, we deceive ourselves, and the truth is not in us.

9If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

10If we say that we have not sinned, we make him a liar, and his word is not in us.

📖 Chapter study

Summary

John testifies about Jesus, whom he personally saw, heard, and touched, proclaiming that God is light and in him there is no darkness at all. He teaches that confessing our sins brings forgiveness and cleansing through Jesus.

Explanation

John, who was likely already a very old man when he wrote this letter, begins by reinforcing his personal, physical experience with Jesus—likely to counter a teaching that denied Christ's true human, bodily reality. The statement that 'God is light and in him is no darkness at all' sets an absolute moral and spiritual standard by which to measure the Christian life, with no middle ground between light and darkness. The invitation to confess sin, with the assurance that God is 'faithful and just to forgive,' offers practical, ongoing hope for those who fail, without denying the reality of sin or falling into despair. Today's application is that sincere confession of our failures, rather than denying them, is the path to experiencing God's forgiveness and cleansing.

Fun facts

  • The apostle John is traditionally identified as the author of the fourth Gospel as well as this letter and the book of Revelation, and is the only one of the twelve original apostles who, according to tradition, did not die as a martyr, living to an old age in Ephesus.

Verse-by-verse explanation

  1. 1 John 1:1Describing Jesus as “that which was from the beginning,” something their own hands had touched, emphasizes that He was a real, physical person, not an apparition or abstract idea — a direct counterpoint to teachings circulating at the time that denied Christ had actually come in the flesh.
  2. 1 John 1:2Repeats the idea from the letter’s opening: the “eternal life” that existed with the Father from the beginning became visible through Jesus, and John is simply telling readers what he saw with his own eyes.
  3. 1 John 1:3Explains the reason for writing: sharing this direct experience with Jesus is meant to include readers in the same fellowship — and this fellowship, the text says, is already shared with God the Father Himself and the Son.
  4. 1 John 1:4States that the practical purpose of the whole letter is simple: to make readers’ joy complete through this shared fellowship.
  5. 1 John 1:5Saying “God is light, and in him is no darkness at all” establishes the moral foundation for the rest of the letter: if God is entirely light, then claiming to have fellowship with Him while living in darkness is a contradiction, as the text itself explains next.
  6. 1 John 1:6Continues the reasoning about light and darkness from the previous verse: claiming to have fellowship with God while living in darkness (bad choices) is a contradiction — the text calls this directly a lie.
  7. 1 John 1:7The phrase about “the blood of Jesus Christ” cleansing from all sin is tied to the idea of walking in the light mentioned earlier — it doesn’t describe automatic forgiveness independent of any attitude, but something that is part of a life lived in transparency, without hiding wrongdoing.
  8. 1 John 1:8Saying that whoever claims to have no sin “deceive ourselves,” as the verse puts it, is a direct correction against any claim to moral perfection — the text assumes everyone sins, and the problem is not sinning, but denying it.
  9. 1 John 1:9The promise that confessing sins leads to forgiveness, because God is “faithful and just,” describes confession as an ongoing process, not a one-time event — fitting the chapter’s idea that no one is exempt from needing it.
  10. 1 John 1:10Closes the chapter with the same logic as verse 8: denying that one sins, besides being self-deception, makes God a liar, since His own word affirms that everyone sins.

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