1 John 5:11-12
The context
First John 5 closes the letter's argument about assurance. The chapter has spoken of loving God and neighbor, of faith overcoming the world, and of the testimony of water, blood and Spirit. Verses 11–12 state the content of that testimony, and verse 13 gives the purpose: that the readers may know they have eternal life.
What it establishes
The verses locate life in a person rather than in a state or a quality. The gift is given, the location is the Son, and possession follows from having him. The construction is deliberately exclusive on both sides: whoever has the Son has life, and whoever does not has not.
What it does not establish
It does not define what eternal life is. The Gospel defines it as knowing God and Jesus Christ, but this verse does not, and it does not describe the life's conditions or its experience. It states a location and a possession, and leaves the rest to the letter's other tests.
Short note, first pass, October 2026. Corrections welcome.
Cited in these answers
Part of Scripture, Opened — the exegetical layer behind every citation on this site. Scripture quotations are from the ESV.