3 John 1:12

“Demetrius hath good report of all [men], This man was of a quite different cast from Diotrephes, and therefore the apostle makes mention of him to Gaius, to be followed by him, and not the other; he was either the same with Demas, which is a contraction of this name, or the person that John sent from Ephesus with this letter: we read of an Ephesian of this name, (<441924>Acts 19:24); though not the same person; or else one that also was a member of the same church with Gaius and Diotrephes; and he being kind and beneficent, obtained a good report of the generality of men, not only of the brethren, but of those that were without; for a liberal man is universally respected. The Syriac version…”

“of all men--who have had opportunity of knowing his character. of the truth itself--The Gospel standard of truth bears witness to him that he walks conformably to it, in acts of real love, hospitality to the brethren (in contrast to Diotrephes), &c. Compare Joh 3:21 "He that doeth truth cometh to the light, that his deeds may be made manifest that they are wrought in God." we also--besides the testimony of "all men," and "of the truth itself." ye know--The oldest manuscripts read, "thou knowest."”

“Demetrius hath good report of all men - Little is known of Demetrius. Lucke supposes that he resided near the place where the author of this Epistle lived, and was connected with the church there, and was probably the bearer of this Epistle. It is impossible to determine with certainty on this point, but there is one circumstance which seems to make it probable that he was a member of the same church with Gaius, and had united with him in showing Christian hospitality to these strangers. It is the use of the phrase “hath good report of all,” implying that some testimony was borne to his character beyond what the writer personally knew. It is possible, indeed, that the writer would have used…”

“And from the truth itself - That is, what they testify is the very truth. Yea, we also bear testimony - I and they that are with me. 3 John 1:14”

“1:12 Demetrius was the very opposite of Diotrephes, a prime example of one who knows the truth and practices it (1:3). The placement of Demetrius’s name at the end of the letter suggests that he was the one who carried John’s letter to Gaius (cp. Col 4:7-9; 1 Pet 5:12). • you know we speak the truth: John wished to protect his honor as a reliable elder over these churches rather than being shamed by any possible usurpation by Diotrephes and other false teachers.”

“good: Act 10:22, Act 22:12; Th1 4:12; Ti1 3:7 and we: Joh 19:35, Joh 21:24 3 John 1:13”