John writes to Gaius, a beloved friend, praying for his health in both body and soul and rejoicing to hear of his faithful walk with God. He praises Gaius for showing hospitality to traveling missionaries who, refusing payment for their work, rely on the generosity of fellow Christians. John warns about Diotrephes, who rejects apostolic authority and obstructs those who would help such workers. Gaius must not imitate this evil but follow what is good, for goodness reflects God’s character. John commends Demetrius—likely the courier—as one whose faith and reputation can be trusted. The letter ends with a promise of an upcoming visit.
Where 2 John warns about giving hospitality to false teachers, 3 John emphasizes welcoming and supporting Christian missionaries. Gaius’s steadfastness shows that faith is proven by action—by generosity, humility, and perseverance when others misuse power. Diotrephes stands as a warning that pride and control can fracture the fellowship of believers. John’s brief letter reminds every generation that Christian truth must take root in Christian relationships: integrity, discernment, and love working together for the gospel.
5: Beloved, it is a faithful thing you do in all your efforts for these brothers, strangers as they are.
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