3 John 1:9 - Coke's Commentary on the Holy Bible

But Diotrephes,— Diotrephes has been taken for a Gentile Christian, who would not receive the Jewish Christians; and it must be acknowledged that it was a common name among the Gentiles: but it is also well known, that Alexander, Philip, Stephen, AEneas, and many other Gentile names, were common among the Jews, and therefore the name of Diotrephes will prove nothing. Besides, the Gentile Christians rarely or ever refused communion with the Jewish Christians; but the Judaizing Christians very frequently refused to join with the Gentile converts; and several of the Judaizers resisted men endued with apostolic authority. Diotrephes therefore seems to have been a zealous, bigoted, Judaizing Christian, the minister of some Christian church near Ephesus; who was out of all patience with such as preached the gospel to the Gentiles, and would neither use them kindly himself, when they passed that way, nor suffer any of his church, if he could help it, to treat them with kindness, and encourage them in that attempt.