1 John 4:20

The context

First John 4 moves from testing spirits to a sustained passage on love, grounding it in God's prior love and the sending of his Son. The paragraph argues that love is evidence of abiding in God. Verse 20 answers a claim to love God made by someone who does not love a fellow believer.

What it establishes

The verse makes love for a visible brother the test of a claim to love an invisible God, and it calls the contrary claim a lie. It ties the vertical command to the horizontal one so that the second is not optional.

What it does not establish

It does not reduce love of God to ethics. The letter grounds love in God's prior action and in the confession of the Son, and the command is not exhausted by benevolence. Nor does it define what loving a brother requires; the passage supplies the standard.

Short note, first pass, October 2026. Corrections welcome.

Cited in these answers

• I am homosexual and I was born homosexual – don't homosexuals have the right NOT to be hated and persecuted by the church?
• I guess I can’t be a Christian because I don’t hate my parents. Why does Jesus tell us we need to hate our parents in order to be his disciple (Luke 14:26)?

Part of Scripture, Opened — the exegetical layer behind every citation on this site. Scripture quotations are from the ESV.