Verse explainer
Our love for God isn't the starting point — it's the response. He moved first.
We love him, because he first loved us.
BSBWe love because He first loved us.
The plain meaning
John has just argued that no one has ever seen God, yet God becomes visible in the love his people show one another (v. 12). Now he names why that love is even possible: it originates in God, not in us. The phrase 'he first loved us' (Greek: autos prōtos ēgapēsen hēmas) places God's initiative before any love we could generate. Notice that the BSB renders simply 'We love because He first loved us' — the object 'him' is absent from the oldest manuscripts. This may widen the scope: the love God's prior action produces in us flows outward to God and neighbor alike. John then immediately applies the test in v. 20: claiming to love God while hating a brother is a self-contradiction, because the same divine love that reached us is meant to move through us. The verse is not a sentimental motto about God's affection; it is a statement about the source and direction of all genuine Christian love.
The common misreading
What the commentators say
Clarke identifies three layers in the verse: we love God because we find he has loved us (discovery), because we feel the weight of obligation and gratitude (duty), and because his love shed abroad in our hearts is itself the seed from which our love grows (causation). He also notes that several ancient versions render the verse as an exhortation — 'let us therefore love him' — which keeps the ethical force without losing the theological foundation.
Gill stresses the priority and freedom of God's love: it is from everlasting, unmerited, and wholly unsolicited. His love shown in sending the Son arrived when we had none toward him, and his regenerating grace is what first brings love into act in the heart. Gill's point is that the larger the discovery of that prior love becomes, the more love to God increases — there is a proportional relationship between apprehending God's initiative and the warmth of our response.
JFB notes that the oldest manuscripts omit 'him,' so the intended sense is that we love — God and neighbor both — because he first loved us. The Greek aorist ('he loved us') points to a definite historical act: the sending of the Son. This prior, concrete act is what ought to create in us the love that casts out fear described just above in v. 18. God's initiative is the engine; our love is the motion it produces.
The word behind it
'First' — not merely earlier in time, but first in the sense of originating, of taking initiative where none existed. Thayer notes the word can denote primacy of rank or sequence. Here it does both: God's love is temporally prior and causally foundational. Our love does not earn or prompt his; his love is what calls ours into existence. Remove 'first' and the verse becomes a vague mutual affection; keep it and the direction of causation is unmistakable.
Related verses