1) "Wherefore, if I come" (Greek dia touto) Wherefore or "on account of this" - John wrote, if I, or should I come, indicating a conditional hope to come, 3 John 1:14.
2) “I will remember his deeds". John, though an aged apostle, was not afraid of Diotrephes and resolved to encounter him regarding his deeds.
3) "Which he doeth" (Greek “ha poiei”, present active indicative means keeps on doing). Diotrephes seems to have become a self-appointed faultfinder against John and the Missionary brethren, a sniping, carping, self-righteous dictatorial pastoral Pharisees.
4) "Prating against us with malicious words," Prateth- - (Greek phluaros) means" to babble, idly, accuse, and falsely passing a report as 1 Timothy 5:13. The term "malicious words" means not merely foolish words, but also malevolent words of evil and influence destroying intent.
5) "And not content therewith" - seldom are talebearers, faultfinders, gossips, and self-appointed church critics content or satisfied therewith, be they laymen or officials in the church. To deride, scoff, or attempt to degrade a brother or sister, usually leads to more vicious forms of evil.
6) "Neither doth he himself receive the brethren." People who live in evil, practice evil, hold jealousy, hatred, and old grudges usually seek to avoid an Holy and bold person. They hate the Iight, reject its available help, lest it show them for what they are. John 3:19-21; John 8:12; 1 John 1:6-7.
7) "And forbiddeth them that would" The term "forbid" means to hinder, or stand in the way, to obstruct, brethren in the church from receiving missionary companions of John who desired to visit the church brethren.
8) "And casteth them out of the church." This Diotrephes, whether dictator pastor, or a preeminent desiring layman, or pastor and church bossing official, either personally assumed authority and power to (Greek ekballo) toss out, exclude from the church, or influence the church to exclude from her fellowship any member who expressed a desire that the church receive John and his co-laborers in mission work. This spirit is that held by the wicked Jews of the Synagogue against Jesus, as recorded John 9:34. This Diotrephes thus seems both to have hindered members of the church from extending Christian courtesies to visiting brethren and to have debarred and hindered any report from them before the church.
It ill becomes any church leader, even if a shepherd, to act like a goat, or whip cracking cowboy. God’s pastors are referred to as shepherds, who go before and call the flock, but never as cowboys who ride as whip crackers behind a herd. Let it also be remembered that God’s shepherds are also sheep, subject to the Laws of the Shepherd, Christ Jesus, Matthew 20:25-28; 1 Peter 5:3. If a shepherd, were only a shepherd, he would never bear a sheep. Only a sheep bears a sheep.