3 John 1:1 - Arthur Peake's Commentary on the Bible

3 John 1:1. Salutation. Gaius (or Caius) was a common Roman name, being applied elsewhere in the NT to men belonging to Macedonia (Acts 19:29), Derbe (Ac. 204) and Corinth (1 Cor. 114). The Gaius of 3 Jn. may have been distinct from all these, though early tradition says that Gaius of Corinth acted as John's scribe, and that the apostle appointed a Gaius as Bishop of Pergamum.