The Pulpit Commentary - 3 John 1:11-12
Imitating the good. "Beloved, follow not that which is evil," etc. This exhortation occurs here very naturally after the mention of Diotrephes. "Beloved, imitate not that which is evil;" do not copy Diotrephes; regard him not as an example, but as a beacon. But imitate the good; take Demetrius as a pattern; copy his conduct. I. MAN IMITATES . It is implied here that Gaius would imitate either the good or the evil—either Demetrius or Diotrephes. The propensity to imitation is one of... read more
The Pulpit Commentary - 3 John 1:11
This is the moral to which St. John has been leading up. Diotrephes will at least serve as a warning. A Christian gentleman will note such behaviour in order to avoid it. Strengthened by his own previous walk in the truth (verse 3), and encouraged by the apostle (verses 5-8), with Diotrephes as a warning on the one hand, and Demetrius as an example on the other, he ought not to fail in proving his heavenly birth by doing good and avoiding evil (see on 1 John 3:6 ). read more