The elder writes to beloved Gaius, whom he loves in truth. He prays that all may go well with him and that he may be in good health, as his soul is getting along well. He rejoiced greatly when brothers came and testified to the truth in which Gaius walks. He has no greater joy than to hear that his children are walking in the truth (vv. 1-4).
He praises Gaius for his faithfulness in what he does for the brothers, even when they are strangers. They testified to his love before the church. He asks him to send them on their journey in a manner worthy of God, because they went out for the sake of the Name, accepting nothing from the Gentiles. So believers ought to support such people and thus become fellow workers for the truth (vv. 5-8).
The elder wrote something to the church, but Diotrephes, who likes to put himself first, does not acknowledge them. When he comes, he will call attention to what Diotrephes does, talking wicked nonsense against them; not content with that, he refuses to welcome the brothers and stops those who want to, and puts them out of the church (vv. 9-10).
The elder urges Gaius not to imitate evil but good: whoever does good is from God, and whoever does evil has not seen God. Demetrius has received a good testimony from everyone, and from the truth itself; the elder adds his own, and Gaius knows it is true. He has much to write, but prefers to see him soon and speak face to face. Peace be to him, and the friends greet him (vv. 11-14).