The elder. — See the Introduction, and 2 John 1:1.
Gaius. — The common Roman name Caius. A Caius is mentioned in Acts 19:29; Acts 20:4; Romans 16:23; 1 Corinthians 1:14. The difference in date between these and St. John’s correspondent would alone be sufficient reason against any attempt at identification. There is nothing to show whether he was a presbyter or not.
Whom I love in the truth. — Or, in truth. (See 2 John 1:1.)