Demetrius hath good report of all men, and of the truth itself: yea, and we also bear record; and ye know that our record is true.

People's New Testament

1:12 Demetrius hath good report by all men. Of this Demetrius we know nothing more. Perhaps he was a member of the same church as Diotrephes, whose example is contrasted.

Wesley's Notes

1:12 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.

Jamieson-Fausset-Brown Bible Commentary

12. 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."

Matthew Henry's Concise Commentary

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.

Matthew Henry's Whole Bible Commentary

Verses 12-14

Here we have, I. The character of another person, one Demetrius, not much known otherwise. But here his name will live. A name in the gospel, a fame in the churches, is better than that of sons and daughters. His character was his commendation. His commendation was, 1. General: Demetrius has a good report of all men. Few are well spoken of by all; and sometimes it is ill to be so. But universal integrity and goodness are the way to (and sometimes obtain) universal applause. 2. Deserved and well founded: And of the truth itself, v. 12. Some have a good report, but not of the truth itself. Happy are those whose spirit and conduct commend them before God and men. 3. Confirmed by the apostle's and his friends' testimony: Yea, and we also bear record; and that with an appeal to Gaius's own knowledge: And you (you and your friends) know that our record is true. Probably this Demetrius was known to the church where the apostle now resided, and to that where Gaius was. It is good to be well known, or known for good. We must be ready to bear our testimony to those who are good: it is well for those who are commended when those who commend them can appeal to the consciences of those who know them most.

II. The conclusion of the epistle, in which we may observe, 1. The referring of some things to personal interview: I have many things to write, but I will not with ink and pen, but I trust I shall shortly see thee, v. 13, 14. Many things may be more proper for immediate communication than for letter. A little personal conference may spare the time, trouble, and charge, of many letters; and good Christians may well be glad to see one another. 2. The benediction: Peace be to you; all felicity attend you. Those that are good and happy themselves wish others so too. 3. The public salutation sent to Gaius: Our friends salute thee. A friend to the propagation of religion deserves a common remembrance. And these pious persons show their friendship to religion as well as to Gaius. 4. The apostle's particular salutation of the Christians in Gaius's church or vicinity: Greet thy friends by name. I doubt they were not very many who must be so personally saluted. But we must learn humility as well as love. The lowest in the church of Christ should be greeted. And those may well salute and greet one another on earth who hope to live together in heaven. And the apostle who had lain in Christ's bosom lays Christ's friends in his heart.