² sn When the author tells Gaius “you demonstrate faithfulness by whatever you do” he is commending him for his faithful service to the traveling missionaries (the brothers). Gaius has assisted them, and they have now returned with a report of this to the author (3 John 3).

¹ tn The author has already described Gaius as “dear friend” or “beloved” (τῷ ἀγαπητῷ, tō agapētō) in v. 1; he will address Gaius in the same way in vv. 5 and 11 (᾿Αγαπητέ, Agapēte). This is a term of endearment and personal warmth, much as it is when used by the author as an address in 1 John 2:7.

² tn BDAG 821 s.v. πιστός 1.b offers the translation “act loyally” for this context, a usage which is not common but does fit well here. Since the author is going to ask Gaius for additional help for these missionaries in the following verse, he begins here by commending Gaius for all that he has already done in this regard.

¹ sn Demetrius is apparently someone Gaius would have heard about, but whose character was not known to him. Thus the author is writing to Gaius to attest to Demetrius’ good character. It appears that Demetrius is coming to Gaius’ church and needs hospitality and assistance, so the author is writing to commend him to Gaius and vouch for him. It is difficult to know more about Demetrius with any certainty, but the author is willing to give him a powerful personal endorsement (We testify to him too). Demetrius may well have been the leader of a delegation of traveling missionaries, and may even have been the bearer of this letter to Gaius. The writing of letters of introduction to be carried along by representatives or missionaries in NT times is also attested in Paul’s writings (1 Cor 16:3).

¹ sn The church mentioned here, which the author says he may visit (3 John 10) is not the same as the one mentioned in 3 John 6, to which the author apparently belongs (or of which he is in charge). But what is the relationship of this church in v. 9 to Gaius, to whom the letter is addressed? It is sometimes suggested that Gaius belongs to this church, but that seems unlikely because the author uses a third person pronoun to refer to the other members of the church (among them). If Gaius were one of these it would have been much more natural to use a second person pronoun: “Diotrephes, who loves to be first among you.” Thus it seems probable that Gaius belongs to (or is in charge of) one local church while Diotrephes is in another, a church known to Gaius but to which he does not belong.

³ sn Now the author, after commending Gaius for his faithful service to the traveling missionaries in the past (see 3 John 5), now requests additional assistance at the present time (send them on their way in a manner worthy of God). Apparently the missionaries are on their way to visit the area where Gaius’ church is located a second time. They had been there once already and had returned with a good report of how Gaius had assisted them. It is entirely possible that they themselves carry with them the present letter as a letter of introduction. Along these lines it has been suggested that Demetrius (see 3 John 12) is one of these traveling missionaries, perhaps the leader of the delegation, and the author is formally introducing him to Gaius, since when he was there the last time he was a stranger (v. 5) but Gaius assisted him anyway.

¹ sn Just as it is well with your soul. The equivalent contemporary idiom would be to speak of “spiritual” health as opposed to physical health. The author affirms that Gaius is indeed well off spiritually, and he prays that Gaius’ physical health would match his spiritual health, i.e., that Gaius would be as well off physically as he is spiritually. It is the spiritual health which is to be the standard by which one’s physical health is measured, not the other way round.

⁴ tn Grk “and Gaius,” but this καί (kai) has not been translated since English normally uses a coordinating conjunction only between the last two elements in a series of three or more.

² sn The figurative phrase with pen and ink is parallel to 2 John 12, suggesting that both letters may well have been written at approximately the same time and in similar situations. The author tells Gaius that he has more to say, but does not wish to do so in writing; he would rather talk in person (3 John 14). It appears that the author anticipates a personal visit to Gaius’ church in the very near future. This may be the same visit mentioned in connection with Diotrephes in v. 10. Gaius’ church and Diotrephes’ church may have been in the same city, or in neighboring towns, so that the author anticipates visiting both on the same journey.

⁴ sn It is possible that the designation friends (φίλοι, philoi) indicates that these are personal friends of Gaius who send their greetings, but if this is the case it is somewhat surprising that their names are not mentioned, especially when the author instructs Gaius, Greet the friends there by name. More likely this is an alternative to “brothers” (ἀδελφοί, adelphoi) as an early Christian self-designation, especially within the Johannine community. It may have arisen in the Johannine community from Jesus’ teaching in John 15:13-15, “you are my friends if you do what I command you.”

² sn Which church does the author refer to here? The church where Gaius is, the church where the author is, a different local church where the “brothers” are, or the ‘universal’ church, the church at large? Since the suggestion in 3 John 3 is that the “brothers” have come and testified in the author’s church about what Gaius has done for them, it seems most likely that the “church” mentioned here is also the author’s church, where he is currently located. Other possibilities cannot be ruled out, but seem unnecessarily complicated.

³ sn Little reliable information is available concerning the identity of the person to whom 3 John is addressed. Because the name Gaius was very common in the Roman Empire, it is highly unlikely that the person named here is to be identified with any of the others of the same name associated with Paul (1 Cor 1:14, Rom 16:23 [these two references are probably to the same person]; Acts 19:29, Acts 20:4). A 4th century tradition recorded in the Apostolic Constitutions 7.46.9 (ca. a.d. 370) states that John the Apostle ordained Gaius as bishop of Pergamum, but this is questionable because of the relatively late date. The only certain information about this individual must be obtained from 3 John itself, and there is not a great deal there. It is obvious that this person is well known to the author, but it is not so certain whether they had met personally or not because the report of Gaius’ conduct toward the brothers is received secondhand by the author (v. 3). Nor can it be determined with certainty whether Gaius belonged to the same local church as Diotrephes (v. 9), or was himself the leader of another local congregation. It is clear that the author regarded him as orthodox (v. 3) and a valuable ally in the controversy with the secessionist opponents and their false Christology discussed at length in 1 John.

² sn This is apparently a reference to the Roman forces, led by Gaius Popilius Laenas, which confronted Antiochus when he came to Egypt and demanded that he withdraw or face the wrath of Rome. Antiochus wisely withdrew from Egypt, albeit in a state of bitter frustration.

¹ sn Clearly the author does not refer to himself alone by the use of the first person plural pronoun we here, since the issue is support for the traveling missionaries. It stands in contrast to the pagans mentioned in the previous verse, and is thus to be understood as inclusive of all true Christians: the author, Gaius, and all true Christians. All true Christians ought to support the endeavors of these traveling missionaries in their efforts to counteract the heretical teaching of the opponents.

¹ sn The exhortation do not imitate what is bad but what is good is clearly a reference to Diotrephes’ evil behavior. The author exhorts Gaius (whom he wishes to continue assisting the missionaries) not to follow the negative example of Diotrephes, but to do what is right. Implicitly there may be a contrast between the bad behavior of Diotrephes and the good reputation of Demetrius (mentioned in the following verse), but it seems more likely that Demetrius is himself one of the traveling missionaries (perhaps their leader), rather than the leader of a local congregation who, unlike Diotrephes, has supported the missionaries himself.

⁴ tn The prepositional phrase ἐν ἀληθείᾳ (en alētheia) in 3 John 1 is similar to 2 John 1, although it is not qualified here as it is there (see 2 John 1). This is not merely the equivalent of an adverb (“truly”), but is a theological statement affirming the orthodoxy of Gaius, to whom the letter is addressed. “Truth” is the author’s way of alluding to theological orthodoxy in the face of the challenge by the opponents (see 1 John 3:19).

² sn Diotrephes appears to be an influential person (perhaps the leader) in a local church known to Gaius, but to which Gaius himself does not belong. The description of Diotrephes as one who loves to be first suggests he is arrogant, and his behavior displays this: He refuses to acknowledge the written communication mentioned by the author at the beginning of v. 9 (and thus did not recognize the author’s apostolic authority), and furthermore (v. 10) refuses to show any hospitality to the traveling missionaries (welcome the brothers) already mentioned by the author. It has been suggested that the description “loves to be first” only indicates that Diotrephes sought prominence or position in this church, and had not yet attained any real authority. But his actions here suggest otherwise: He is able to refuse or ignore the author’s previous written instructions (v. 9), and he is able to have other people put out of the church for showing hospitality to the traveling missionaries (v. 10).

² sn Three possibilities for the identification of “The Name” have been suggested: (1) the name of God, suggested by the unqualified noun with the Greek article. In Rabbinic literature “the Name” is a frequent substitute for the Tetragrammaton YHWH, the name of God, which was too sacred to be pronounced. This would make good logical sense in 3 John because in the previous verse the author has instructed Gaius to send the missionaries on their way “in a manner worthy of God.” (2) Some have understood “the Name” as the self-designation of the Johannine community, or as a reference to the Christian cause at large, or as a way of designating Christians before the title “Christian” came into common usage. (3) The interpretation favored by most commentators is that this is a reference to Jesus’ name. Paul uses a similar phrase in Rom 1:5, and in 1 John 2:12 the author wrote, “your sins are forgiven on account of His (Christ’s) name.” John’s Gospel also makes reference to believing “in the name of Jesus” (John 1:12; 3:18).