Commentaries
1:9-12 Both the heart and mouth must be watched. The temper and spirit of Diotrephes was full of pride and ambition. It is bad not to do good ourselves; but it is worse to hinder those who would do good. Those cautions and counsels are most likely to be accepted, which are seasoned with love. Follow that which is good, for he that doeth good, as delighting therein, is born of God. Evil-workers vainly pretend or boast acquaintance with God. Let us not follow that which is proud, selfish, and of bad design, though the example may be given by persons of rank and power; but let us be followers of God, and walk in love, after the example of our Lord.
10. if I come—(3Jo 14).
I will remember—literally, "I will bring to mind" before all by stigmatizing and punishing.
prating—with mere silly tattle.
neither doth he … receive the brethren—with hospitality. "The brethren" are the missionaries on their journey.
forbiddeth them that would—receive them.
casteth them—those that would receive the brethren, by excommunication from the Church, which his influence, as a leading man (3Jo 9) in it, enabled him to do. Neander thinks that the missionaries were Jews by birth, whence it is said in their praise they took nothing from THE Gentiles: in contrast to other Jewish missionaries who abused ministers' right of maintenance elsewhere, as Paul tells us, 2Co 11:22; Php 3:2, 5, 19. Now in the Gentile churches there existed an ultra-Pauline party of anti-Jewish tendency, the forerunners of Marcion: Diotrephes possibly stood at the head of this party, which fact, as well as this domineering spirit, may account for his hostility to the missionaries, and to the apostle John, who had, by the power of love, tried to harmonize the various elements in the Asiatic churches. At a later period, Marcion, we know, attached himself to Paul alone, and paid no deference to the authority of John.