3 John 1:9

I wrote. As an apostle, John supervised the work of the church. He would write many such short letters to keep in touch with many local churches and individuals. But Diotrephes. We know nothing else about him. He is probably a church elder, and may be a Nicolaitan (See notes on Revelation 2:14-15). Who loves to be their leader. Diotrephes is a church boss. It may be that the glory of power is what motivates him, but we can only guess, since we have no details. There must have been many such as this man in the early church (See 1 Peter 5:3 and note). Will not. He refused to listen to what John said. Some think this means he was a Paulite (1 Corinthians 1:12) who rejected the authority of the other apostles.