"But concerning love of the brethren ye have no need that one write unto you: for ye yourselves are taught of God to love one another; for indeed ye do it toward all the brethren which are in all Macedonia. But we exhort you, brethren, that ye abound more and more; and that ye study to be quiet, and to do your own business, and to work with your hands, even as we charged you; that ye may walk honestly toward them that are without, and may have need of nothing."--1 THESS. iv. 9-12 (R.V.).
When the gospel first came abroad in the world, two characteristics of its adherents attracted general attention, namely, personal purity and brotherly love. Amid the gross sensuality of heathenism, the Christian stood out untainted by indulgence of the flesh; amid the utter heartlessness of pagan society, which made no provision for the poor, the sick, or the aged, the Church was conspicuous for the close union of its members and their brotherly kindness to each other. Personal purity and brotherly love were the notes of the Christian and of the Christian community in the early days; they were the new and regenerating virtues which the Spirit of Christ had called into existence in the heart of a dying world. The opening verses of this chapter enforce the first; those at present before us treat of the second.
"Concerning love of the brethren ye have no need that one write unto you: for ye yourselves are taught of God to love one another." The principle, that is, of brotherly love is of the very essence of Christianity; it is not a remote consequence of it which might easily be overlooked unless it were pointed out. Every believer is taught of God to love the brother who shares his faith; such love is the best and only guarantee of his own salvation; as the Apostle John writes, "We know that we have passed out of death into life, because we love the brethren." It is perhaps not unnecessary to remark that, in the New Testament, brethren means fellow-Christians, and not fellow-men. We _have_ duties to all men, which the Bible does not fail to recognise and enforce; we are one with them in the nature God has given us, and the great alternatives life sets before us; and that natural unity is the basis of duties which all owe to each other. Honour _all_ men. But the Church of Christ creates new relations between its members, and with these new relations mutual obligations still more strong and binding. God Himself is the Saviour of all, specially of them that believe; and Christians in like manner are bound, as they have opportunity, to do good unto all men, but specially to those who are of the household of faith. This is not sufficiently considered by most Christian people; who, if they looked into the matter, might find that few of their strongest affections were determined by the common faith. Is not love a strong and peculiar word to describe the feeling you cherish toward some members of the Church, brethren to you in Christ Jesus? yet love to the brethren is the very token of our right to a place in the Church for ourselves. "He that loveth not knoweth not God; for God is love."
These words of John give us the key to the expression "taught of God to love one another." It is not likely that they refer to anything so external as the words of Scripture, "Thou shalt love thy neighbour as thyself." Even in the Old Testament, to be taught of God was something more spiritual than this; it was the same thing as to have the law written on the heart. That is what the Apostle has in view here. The Christian has been born again, born of God; he has a new nature, with new instincts, a new law, a new spontaneity; it is now native to him to love. Until the Spirit of God enters into men's hearts and recreates them, life is a war of all against all; man is a wolf to man; but in the Church that internecine strife has ended, for its members are the children of God, and every one that loveth Him that begat loveth him also that is begotten of Him. The selfishness of man's nature is veiled, and to some extent repressed, in other societies; but it is not, as a principle, exterminated except in the Church and by the Spirit of Christ. A family ought to be an unselfish place, ruled only by and fostering the spirit of love; yet if Christ be not there, what selfish passions assert themselves in spite of all restraint. Any association working for the common good--a town council even--ought to be an unselfish body; yet how often, in such places, is rivalry conspicuous and self-seeking, and envy, and detraction, and all that is unlike Christ. In the Church which has been taught of God, or, in other words, which has learned of Christ, we find at least some manifestations of a better spirit. It does contain people who love one another because they are Christians; who are unselfish, giving way to each other, esteeming each other, helping each other; if it contained none such, it would not be a Church at all.