John 17:3
What does John 17:3 mean?
This is eternal life, that they should know you, the only true God, and him whom you sent, Jesus Christ.
The short answer
John 17:3 sits inside a prayer. Jesus, on the night before his death, is speaking to his Father—and suddenly the prayer pauses to offer a definition: "This is eternal life, that they should know you, the only true God, and him whom you sent, Jesus Christ."
Notice what eternal life is not, in this definition. It is not described as a length of time, a place, or a reward waiting at the end of a faithful life. It is defined as knowing—knowing God, and knowing the one God sent. In the Bible, "knowing" someone is never just having information about them. It is relationship: the kind of knowing that grows between people who share life together. So the verse is saying something startling. Eternal life is not primarily something you wait for. It is something you enter into now, by coming to know God personally through Jesus.
The verse also does something unusual with its form. Jesus refers to himself in the third person, by his full name—"Jesus Christ"—which appears only twice in the whole Gospel of John. It reads less like a private prayer and more like a confession of faith spoken from the far side of the resurrection, the way the early church would later speak of him. The Gospel writer seems to be letting his own voice blend with Jesus' voice at this moment, so that the definition carries both the intimacy of prayer and the clarity of a creed.
One more thing the verse insists on: knowing "the only true God" and knowing "him whom you sent" are inseparable. You cannot have one without the other. In John's Gospel, Jesus is the one who makes the Father known, so knowing the Son is how anyone comes to know the Father. Eternal life, then, is a relationship with God that runs through Jesus—and it begins the moment that knowing begins.
What scholars say
Why does a definition of eternal life—complete with the full name "Jesus Christ"—appear in the middle of a prayer? J. Ramsey Michaels examines the unusual form of John 17:3, where the Gospel writer's voice blends with Jesus' own, echoing passages spoken from a post-resurrection viewpoint.
“So crucial is this "eternal life" that the Gospel writer, blending his words with the words of Jesus, inserts a definition: "And this is the eternal life, that they might know you, the only true God, and him whom you sent, Jesus Christ" (v. 3 ). The definition functions much like the Gospel writer's characteristic narrative asides, yet it is not a narrative aside, for the writer clearly wants to put it on the lips of Jesus. Its closest kinship is with certain passages where Jesus is abruptly represented as speaking of himself in the third person and from the Gospel writer's postresurrection viewpoint (see, for example, 3:13 , 16–21 ; 6:27 , 33 ). Its uniqueness lies in its being part of a prayer and in its use of the actual name, "Jesus Christ"—one of only two occurrences of the full name in the entire Gospel (the other being 1:17 ).”
What it means for you
If eternal life is knowing God, then the spiritual life is less like earning a future prize and more like deepening a present friendship. That reframes the everyday. Prayer, reading, honesty about doubt, quiet attention—these aren't box-checking exercises; they are how a relationship grows. It also offers comfort to anyone anxious about whether they've "done enough." The verse does not measure eternal life in achievements but in acquaintance: do you know him? And it gives direction to anyone who finds God abstract or distant. According to John 17:3, the way to know the only true God is through the one he sent. Start with Jesus—his words, his actions, his character—and you are already beginning eternal life, not merely preparing for it.
John 17 in context
John 17 is often called Jesus' high-priestly prayer. It comes at the end of the long farewell conversation of chapters 13–16, just before his arrest. Jesus lifts his eyes to heaven and prays—first for himself, that the Father would glorify him (vv. 1–5), then for his disciples (vv. 6–19), and finally for all who will believe through their word (vv. 20–26). Verse 3 belongs to the opening lines: Jesus has just said the Father gave him authority to give eternal life, and this verse pauses to explain what that eternal life actually is.