1 John 5:20 Meaning: The True God and Eternal Life
We know that the Son of God has come and has given us an understanding, that we know him who is true; and we are in him who is true, in his Son Jesus Christ. This is the true God and eternal life.
And we know that the Son of God is come, and hath given us an understanding, that we may know him that is true, and we are in him that is true, even in his Son Jesus Christ. This is the true God, and eternal life.
And we know that the Son of God is come, and hath given us an understanding, that we know him that is true, and we are in him that is true, even in his Son Jesus Christ. This is the true God, and eternal life.
and we have known that the Son of God is come, and hath given us a mind, that we may know Him who is true, and we are in Him who is true, in His Son Jesus Christ; this one is the true God and the life age-during!
And we know that the Son of God has come, and has given us an understanding that we should know him that [is] true; and we are in him that [is] true, in his Son Jesus Christ. He is the true God and eternal life.
Meaning in one sentence
What does 1 John 5:20 mean? John declares Jesus Christ is the true God and eternal life, giving us understanding to know Him.
Context
John is wrapping up his first letter. He has been drawing sharp lines between the world and those who belong to God. The whole world, he says, lies in the power of the evil one. But believers are different. They are born of God, kept by Christ, and know beyond doubt that they have eternal life. This final summary verse pulls all those threads together. It is John’s last word on what we know for sure: the Son of God has come, He has opened our minds to know the true One, and we are at home in Him. The verse forms a kind of signature, sealing everything the letter has said about who Jesus is and what we have in Him. Then the next verse warns about idols, as if the central truth must be guarded.
Key Words
Three Greek words stand out here. The word translated “understanding” is dianoia, which means more than just intelligence. It points to the whole mind as a faculty of knowing, feeling, and desiring. John says Jesus has given us this capacity. Not a new brain, but a new way of seeing. The word for “true” is alēthinos, meaning real and genuine, not just truthful. It is the opposite of a counterfeit. In a world full of false gods and cheap substitutes, the God we meet in Christ is the real thing. And the verb for “may know” is ginōskō, which suggests ongoing, personal recognition. Not a one‑time fact we memorized, but a relationship we keep coming back to. John piles up these words so we feel the certainty: we have been given a new mind to recognize the genuine God and keep on knowing Him.
How Christians Read This Verse
Christians across traditions have read the last line of this verse differently. The immediate antecedent for “This is the true God” is “Jesus Christ.” Many Reformed and Protestant commentators, from Calvin to Wesley to Jamieson‑Fausset‑Brown, take this as a clear declaration of Christ’s deity. Matthew Henry says “This Jesus is the only living and true God, together with the Father and the Spirit.” Other readers, including some Catholic and Orthodox interpreters, see the phrase referring back to “Him who is true,” that is, the Father. They still confess Christ as God, but at this point they read John as affirming the Father’s true identity. Both camps agree on the central truth the verse proclaims: the God who is real and eternal is fully known in Jesus Christ, and in Him we have life that never ends.
A common misunderstanding
Some people assume “This is the true God” only refers to the Father, and then they miss John’s point that Jesus shares that identity. The sentence structure places the pronoun “this” directly after “in his Son Jesus Christ.” As many commentators note, the natural reading is that Jesus Christ is the true God and eternal life. The verse does not deny the Father, but it makes a bold claim about the Son.
Living This Out
You do not need to chase fragmented truths about God. John says you have been given an understanding, a whole new way of seeing. This week, when you feel unsure or scattered, come back to one question: “Have I actually met the true God in Jesus?” That is the knowledge you already possess. You are not searching for God in the dark. You are living inside the truth. Let the quiet certainty of this verse settle you. The real God has come close, and He has given you the ability to know Him. Eternal life is not a distant promise, it is the One you already know.
Main takeaway: Jesus Christ is the true God and eternal life, and in Him we truly know the Father.
For Families
For ages 5, 8
Jesus came so we could know the real God. He gave us a special understanding so we can know Him and love Him. That is eternal life: being with God forever.
For ages 9, 12
John ends his letter with a bold statement. He says we know that the Son of God has come and has given us the ability to understand who the true God is. And then he says, “This is the true God and eternal life.” That means Jesus is God, and knowing Him is not just information but a relationship that lasts forever. You do not have to wait until heaven to have eternal life. You can have it now, because you know Jesus.
Questions People Ask
Who is 'the true God' in 1 John 5:20?
The verse says 'This is the true God,' and the nearest name before that is 'Jesus Christ.' Many Christians, including Reformers and early commentators, understand John to be calling Jesus the true God. Others read it as a reference to the Father, but both views agree that knowing the true God happens only through Jesus Christ.
What does 'understanding' mean in this verse?
The Greek word is 'dianoia,' which means the mind as a faculty for understanding, feeling, and desiring. John is not saying Jesus gave us a new brain. He means Jesus gave us the spiritual capacity to truly know God, not just know about Him.
How does this verse relate to the warning about idols in verse 21?
John ends his letter by saying 'keep yourselves from idols.' After declaring that Jesus is the true God, he is warning us not to replace the real God with anything else. Anything we trust or love more than Christ becomes an idol.
Does this verse teach that Jesus is God?
Many Christians see this as one of the clearest statements of Jesus’ deity in the Bible. The pronoun 'this' refers to Jesus Christ, and John says He is 'the true God and eternal life.' While some interpret it differently, the overwhelming witness of the early church and Reformation commentators is that this verse affirms Christ’s divinity.
What does it mean to be 'in Him who is true'?
It means being united to God through faith in Jesus Christ. It is like a branch connected to a vine, drawing life from the source. John says we are not just looking at God from a distance, we are living in Him.
For pastors & researchers
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