In these words the apostle mentions the great duties,

I.Of brotherly love. This he exhorts them to increase in yet more and more. The exhortation is introduced, not with a compliment, but with a commendation, because they were remarkable in the exercise of it, which made it less needful that he should write to them about it, Th1 4:9. Thus by his good opinion of them he insinuated himself into their affections, and so made way for his exhortation to them. Note, We should take notice of that in others which is good, to their praise, that by so doing we may lay engagements upon them to abound therein more and more. Observe,

1.What it is that the apostle commends in them. It was not so much their own virtue as God's grace; yet he takes notice of the evidence they gave of the grace of God in them. (1.) It was God's grace that he took special notice of: that God had taught them this good lesson: You yourselves are taught of God to love one another, Th1 4:9. Whoever does that which is good is taught of God to do it, and God must have the glory. All who are savingly taught of God are taught this lesson, to love one another. This is the livery of Christ's family. Note also, The teaching of the Spirit exceeds the teaching of men; and, as no man should teach contrary to what God teaches, so none can teach so effectually as he teaches; and men's teaching is fain and useless unless God teach also. (2.) The Thessalonians gave good evidence of their being taught of God by their love to the brethren in all Macedonia, Th1 4:10. They not only loved those of their own city and society, or such as were near them and just of their own sentiments, but their love was extensive. And a true Christian's is so to all the saints, though distant from him in place, and differing from him in some opinions or practices of less moment.

2.The exhortation itself is to increase more and more in this great grace and duty of brotherly love, Th1 4:10. Though these Thessalonians had in some sense no need of an exhortation to brotherly love, as if it were wholly wanting, yet they must be exhorted to pray for more, and labour for more. There are none on this side heaven who love in perfection. Those who are eminent in this or any other grace have need of increase therein as well as of perseverance unto the end.

II.Of quietness and industry in their callings. Observe, 1. The apostle exhorts to these duties: that they should study to be quiet, Th1 4:11. It is the most desirable thing to have a calm and quiet temper, and to be of a peaceable and quiet behaviour. This tends much to our own and others' happiness; and Christians should study how to be quiet. We should be ambitious and industrious how to be calm and quiet in our minds, in patience to possess our own souls, and to be quiet towards others; or of a meek and mild, a gentle and peaceable disposition, not given to strife, contention, or division. Satan is very busy to disquiet us; and we have that in our own hearts that disposes us to be disquiet; therefore let us study to be quiet. It follows, Do your own business. When we go beyond this, we expose ourselves to a great deal of inquietude. Those who are busy-bodies, meddling in other men's matters, generally have but little quiet in their own minds and cause great disturbances among their neighbours; at least they seldom mind the other exhortation, to be diligent in their own calling, to work with their own hands; and yet this was what the apostle commanded them, and what is required of us also. Christianity does not discharge us from the work and duty of our particular callings, but teaches us to be diligent therein. 2. The exhortation is enforced with a double argument; namely, (1.) So we shall live creditably. Thus we shall walk honestly, or decently and creditably, towards those that are without, Th1 4:12. This will be to act as becomes the gospel, and will gain a good report from those that are strangers, yea, enemies to it. Note, It is a great ornament to religion when the professors of it are of meek and quiet spirits, diligent to do their own business, and not busy-bodies in other men's matters. (2.) We shall live comfortably, and have lack of nothing, Th1 4:12. People often by their slothfulness bring themselves into narrow circumstances, and reduce themselves to great straits, and are liable to many wants, when such as are diligent in their own business live comfortably and have lack of nothing. They are not burdensome to their friends, nor scandalous to strangers. They earn their own bread, and have the greatest pleasure in so doing.

Touching brotherly love - They were remarkable for this; and though the apostle appears to have had this as a topic on which he intended to write to them, yet, from the account which he received of their prosperous state by Timothy, he finds that it is unnecessary to spend any time in inculcating a doctrine which they fully understood and practised. See Th1 3:6.

But as touching brotherly love,.... Another branch of sanctification; which is distinct from love to God and Christ, though it always accompanies it, and from love to all mankind; and is what is peculiar to brethren in a spiritual relation, and ought to be universal, fervent, and sincere, and as Christ has loved them: concerning which the following things are said,

ye need not that I write unto you. The Vulgate Latin version reads, "we have no need to write unto you"; and so some copies. It seems that it was needful to write unto them about other things, as to refresh their memories with the instructions they had given them, when with them, how they should walk and please God; and to put them in mind of the commandments given them by Christ, and that their sanctification was the will of God; and particularly it was necessary to write unto them about chastity, and purity of life, whether in or out of the conjugal state; but as for brotherly love, there was no immediate absolute necessity to write about that, either about the nature of it, or to describe the objects of it, or point out instances of it, or to exhort to it in a pressing manner: the reason is,

for ye yourselves are taught of God to love one another; not merely by the light of nature, which teaches men to be kind, courteous, affable, and beneficent; nor by the law of Moses, which obliges men to love their neighbours as themselves; nor only doctrinally by the ministry of the Gospel, which frequently inculcates the exercise of this grace as a matter of great importance and consequence; nor only by the new commandment, and example of Christ; but by the Spirit of God internally in regeneration, who, according to the tenor of the new covenant, writes this law of love, and of Christ, upon the heart; and this being written upon the hearts of the Thessalonians, by the finger of the Spirit of God, whereby they were dearly directed, and powerfully taught to exercise this grace, and discharge this duty, and under the influence of the same spirit did exercise it, it was unnecessary for the apostle to write about it, and press them to it.

brotherly love, &c.--referring here to acts of brotherly kindness in relieving distressed brethren. Some oldest manuscripts support English Version reading, "YE have"; others, and those the weightiest, read, "WE have." We need not write, as ye yourselves are taught, and that by God: namely, in the heart by the Holy Spirit (Joh 6:45; Heb 8:11; Jo1 2:20, Jo1 2:27).

to love--Greek, "with a view to," or "to the end of your loving one another." Divine teachings have their confluence in love [BENGEL].