ISB ~ 3 John 1 v1

The elder:The same pastoral title is used by the author of 2 John. Early Christian tradition generally identifies him as the Apostle John.

beloved:An endearing tone runs through the letter, suggesting that John and his addressee have developed a deep, spiritual friendship (2, 5, 11).

Gaius:Several persons of this name appear elsewhere in the NT, one from Macedonia (Acts 19:29), one from Derbe (Acts 20:4), and one from Corinth (1 Cor 1:14). The individual addressed in 3 John could be one of these men, but evidence is lacking to establish such a link with certitude. Nothing certain is known of this Gaius beyond his glowing reputation for holiness (3 Jn 3) and hospitality (56). Perhaps he was a recognized Church leader or simply a wealthy believer who gave food and lodging to preachers passing through the area.