14. The first epistle of John bears throughout the impress of its authorship. That it was written by the same man who wrote the fourth gospel is too evident to be reasonably controverted. On this ground alone its genuineness and authenticity may be regarded as established on a firm basis. But the external testimonies to its authorship are also abundant from Polycarp, the disciple of the apostle, and onward. It is unnecessary to enumerate them. In respect to the date of this epistle we have no certain knowledge. The common opinion is that it was written after the gospel, and towards the close of the first century. With this supposition the contents agree. It contains the affectionate counsel of an aged apostle to his younger brethren, whom he addresses as his "little children." He writes, moreover, in "the last time," when, according to the prediction of our Lord and his apostles, many antichrists and false prophets are abroad in the world (chaps. 2:18; 4:1-3), and there are some who deny that Jesus Christ is come in the flesh (chap. 4:2, 3). As to the place of the apostle's writing, if we follow ancient tradition, which makes Ephesus his home in his old age, we may well believe that he wrote from that city, and that the epistle was addressed primarily to the circle of churches which had Ephesus for a centre.
Some of the ancients refer to the present epistle as written to the Parthians. But this is a very improbable assumption, and rests apparently on some mistake. The apostle evidently writes to those who are under his spiritual care; and these are not the Parthians, but the Christians of Asia, to whom also the seven letters of the Apocalypse are addressed.
15. The epistle has unity throughout, but not the unity of systematic logical arrangement. Its unity consists rather in the fact that all its thoughts revolve around one great central truth, the incarnation of the Son of God in the person of Jesus Christ for the salvation of the world. With this truth he begins, and he affirms it authoritatively, as one of the primitive apostolic witnesses: "That which we have seen and heard declare we unto you." Chaps. 1:3; 4:6. He guards it also against perversion, when he insists upon the reality of our Lord's incarnation: "Every spirit that confesseth that Jesus Christ is come in the flesh, is of God: and every spirit that confesseth not that Jesus Christ is come in the flesh, is not of God" (chap. 4:2, 3), words which are with good reason understood as referring to a very ancient form of error, that of the Docet[oe], who maintained that the Son of God had not a real, but only an apparent body. The reception through faith of this great truth, that the Son of God has come in the flesh for man's salvation, brings us into blissful union and communion with the Father and the Son, and thus into the possession of sonship and eternal life. Chaps. 1:3; 3:1, 2; 4:15; 5:1, 13, 20. The rejection of this truth is the rejection of God's own testimony concerning his Son (chaps. 2:22; 5:9, 10), and thus the rejection of eternal life; for out of Christ, the Son of God, there is no life (chap. 5:11, 12). But this reception of Christ is not a matter of mere theoretic belief. It is a practical coming to the Father and the Son, and a holy union with them. The proof of such union with God and Christ is likeness to God and obedience to God's commandments. They who profess to know God and to be in him, while they walk in darkness and allow themselves in sin, are liars and the truth is not in them. Chaps. 1:5-7; 2:4-6; 3:5-10, 24; 5:4, 5, 18. The sum of all God's attributes is love; and the sum of Christian character is love also. Chap. 4:16. But there can be no true love towards God where there is none towards the brethren; and such love must manifest itself "not in word, neither in tongue; but in deed and in truth." Chaps. 3:11-18; 4:7-11, 20, 21; 5:1. He that loves his brother abides in the light; but he that hates him abides in darkness and death. Chaps. 2:9-11; 3:14, 15. All believers have an abiding unction of the Spirit, which enables them to distinguish between truth and falsehood, and keeps them from the seductions of the many antichrists that are abroad. Chap. 2:18-27. Such true believers, whose hearts are filled with love, are raised above fear, and have confidence in prayer, and may look forward with joyful confidence to the day of judgment. Chaps. 2:28; 3:18-20; 4:17, 18; 5:14, 15. These fundamental truths the apostle reiterates in various forms and connections, intermingling with them various admonitions and promises of a more particular character. He dwells with especial fulness on the evidences of discipleship as manifested in the daily spirit and life. There is perhaps no part of God's word so directly available to the anxious inquirer who wishes to know what true religion is, and whether he possesses it. He who, in humble reliance on the illumination of the divine Spirit, applies to himself this touchstone of Christian character, will know whether he is of God, or of the world that lies in wickedness.
16. Second and third epistles of John. These two short epistles are so closely related to each other in style and manner that they have always been regarded as written by one and the same person. In considering, therefore, the question of their authorship we take them both together. Though reckoned by Origen (in Eusebius' Hist. Eccl., 6. 25) and by Eusebius himself (Hist. Eccl., 3. 25; Demonstratio Evangel. 3. 5) among the disputed writings, the external testimony to their apostolic authorship is upon the whole satisfactory, embracing the names of Irenæus, Clement of Alexandria, Dionysius of Alexandria, Jerome, etc. When we take into account the small extent of these epistles it is plain that no unfavorable inference can be drawn from the silence of Tertullian and others. Nor is there any internal evidence against them. That the man who, in his gospel, studiously avoids the mention of his own name, describing himself as "the disciple whom Jesus loved," and, in his first epistle, simply classes himself with the other apostles—"that which we have seen and heard," etc.—should in these epistles, where some designation of himself was necessary, speak of himself as "the elder" is not surprising. Compare 1 Peter 5:1.
17. Concerning the date of these two epistles we know nothing. The object of the first seems to have been to set before the lady to whom it was addressed the importance of a discriminating love, which distinguishes between truth and falsehood, and does not allow itself to aid and abet error by misplaced kindness towards its teachers.
In the second the apostle, writing to Gaius, commends to his hospitality, certain missionary brethren, who were strangers in the place where this disciple lived. It would seem that the design of these brethren was to preach the gospel to the Gentiles without charge; that he had in a former letter, commended them to the church where Gaius resided; but that Diotrephes had hindered their reception, and persecuted those who favored them.
Short as these epistles are, then, each of them contains weighty instruction—the first, in reference to ill-timed kindness and liberality towards the teachers of error; the second, concerning the character and conduct of those who love to have the preeminence, and the abhorrence in which they ought to be held by all who love the purity and peace of the churches.
IV. EPISTLE OF JUDE.
18. The writer of this epistle styles himself "the servant of Jesus Christ, and brother of James." Chap. 1:1. This James is undoubtedly the same man who held so conspicuous a place in the church at Jerusalem, and was the author of the epistle which bears his name. Whether Jude was an apostle, or an apostolic man, like Mark and Luke, depends upon the question respecting the relation which his brother James held to Christ, concerning which see the introduction to the epistle of James. In either case the canonical authority of the epistle holds good. The close relation between this epistle and the second chapter of Peter's second epistle has already been noticed. See above, No. 13. It was probably anterior in time to that epistle, but not separated from it by a great number of years. If we may infer anything from the abundant use made by the writer of Jewish history and tradition, the persons addressed are Jewish Christians.