John brings the letter near its end by putting the greatest witness ever on the stand. The courtroom picture matters because the whole case comes down to testimony, and when the right witness speaks, uncertainty disappears and the truth is revealed. John wants Christians to know without a shadow of a doubt that Jesus is the Son of God, and that those believing in him have eternal life.
John has been giving three tests through the letter, the right doctrine of Christ, righteous living like Christ, and radical loving like Christ. Here, John returns to the doctrine of Christ because false teachers were denying that Jesus is fully God and that God came in the flesh. The truth is not a side issue. If Jesus is not God the Son, then sinners trusting in him are still in their sins, still perishing, and without eternal life. If Jesus is the Son of God, then sins are forgiven and life eternal is truly given.
John calls God to the witness stand and gives three records of God’s testimony. The water points to Jesus’ baptism, where the Father’s voice declared, “This is my beloved Son.” The blood points to the cross, where God surrounded the death of Jesus with darkness, the torn temple curtain, the earthquake, split rocks, opened tombs, and even a centurion confessing, “Truly this was the Son of God.” The Spirit also testifies, because the Spirit is truth, and the Spirit was at work in the conception, baptism, temptation, ministry, death, and continuing witness to Jesus.
The three testimonies agree. God did not leave the identity of Jesus hanging on human opinion. God said it at the water, God said it at the blood, and God says it by the Spirit. If the testimony of men is received in ordinary life, then the testimony of God is greater.
John then presses the reason for this testimony. God testifies concerning his Son so that sinners might receive eternal life. The one who believes in the Son has the testimony in himself. The one who rejects the Son does not merely disagree with Christians, but calls God a liar. False religion, cults, and every denial of the Son are not harmless differences, because whoever does not have the Son does not have life.
John writes so believers may know. God does not want Christians walking around defeated, always asking, “Am I really saved?” The litmus test is clear: is the testimony of God believed, and is Jesus trusted as Lord and Savior? He who has the Son has life.
Key Takeaways
- 1. God takes the witness stand. God’s testimony is not weak, secondhand, or uncertain. John points past human opinion and places the Father’s own witness at the center, because the truth about Jesus does not rest on a fragile religious feeling. Doubt begins to lose its power when God’s testimony carries more weight than every other voice. [65:03]
- 2. The water, blood, and Spirit agree. The baptism, the cross, and the Spirit all say the same thing: Jesus is the Son of God. God gave more than one witness because the human heart is slow to trust and quick to look for another explanation. The agreement of these three testimonies leaves unbelief without a safe place to hide. [74:04]
- 3. Doctrine is life or death. The truth that Jesus is God the Son is not theological decoration. If the Son is rejected, then the life found only in him is rejected too. John makes the line plain: having the Son means having life, and not having the Son means not having life. [77:31]
- 4. Assurance rests on the Son. Certainty does not come from staring harder at personal performance or repeating spiritual experiences out of fear. Assurance comes from trusting the Son whom God has testified about and resting in what he has done. A doubting Christian may walk defeated, but God gives his people truth so they may know they have eternal life. [83:48]
Youtube Chapters
- [00:00] - Welcome
- [56:08] - A Courtroom Picture of Testimony
- [57:28] - John’s Three Tests of Assurance
- [59:08] - God’s Witness Concerning Jesus
- [61:17] - Reading 1 John 5:6-13
- [63:36] - Why Jesus’ Sonship Matters
- [65:27] - The Water Testifies at Baptism
- [68:11] - The Blood Testifies at the Cross
- [71:59] - The Spirit Testifies to the Son
- [74:04] - Three Witnesses in Agreement
- [75:04] - Eternal Life Is in the Son
- [78:04] - False Doctrine Calls God a Liar
- [79:37] - The Right Response Is Belief
- [82:41] - Believers Can Know They Are Saved
- [85:01] - Warning and Invitation to Believe