Not slothful in business, etc. This precept is given to us, not only because a Christian life ought to be an active life; but because it often becomes us to overlook our own benefit, and to spend our labors in behalf of our brethren. In a word, we ought in many things to forget ourselves; for except we be in earnest, and diligently strive to shake off all sloth, we shall never be rightly prepared for the service of Christ. [1] By adding fervent in spirit, he shows how we are to attain the former; for our flesh, like the ass, is always torpid, and has therefore need of goals; and it is only the fervency of the Spirit that can correct our slothfulness. Hence diligence in doing good requires that zeal which the Spirit of God kindles in our hearts. Why then, some one may say, does Paul exhort us to cultivate this fervency? To this I answer, -- that though it be the gift of God, it is yet a duty enjoined the faithful to shake off sloth, and to cherish the flame kindled by heaven, as it for the most part happens, that the Spirit is suppressed and extinguished through our fault. To the same purpose is the third particular, serving the time: for as the course of our life is short, the opportunity of doing good soon passes away; it hence becomes us to show more alacrity in the performance of our duty. So Paul bids us in another place to redeem the time, because the days are evil. The meaning may also be, that we ought to know how to accommodate ourselves to the time, which is a matter of great importance. But Paul seems to me to set in opposition to idleness what he commands as to the serving of time. But as kurio, the Lord, is read in many old copies, though it may seem at first sight foreign to this passage, I yet dare not wholly to reject this reading. And if it be approved, Paul, I have no doubt, meant to refer the duties to be performed towards brethren, and whatever served to cherish love, to a service done to God, that he might add greater encouragement to the faithful. [2]

Footnotes

1 - "Studio non pigri," tho spoudho me okneroi; "Be not slothful in haste," that is, in a matter requiring haste. "We must strive," says Theophylact, "to assist with promptness those whose circumstances require immediate help and relief." -- Ed

2 - The balance of evidence, according to Griesbach, is in favor, of to kairo, "time," though there is much, too, which countenances the other reading. Luther, Erasmus, and Hammond prefer the former, while Beza, Piscator, Pareus, and most of the moderns, the latter. The most suitable to the context is the former. -- Ed.

Not slothful - The word rendered "slothful" refers to those who are slow, idle, destitute of promptness of mind and activity; compare Matthew 25:16.
In business - τῇ σπουδῇ tē spoudē. This is the same word which in Romans 12:8 is rendered "diligence." It properly denotes haste, intensity, ardor of mind; and hence, also it denotes industry, labor. The direction means that we should be diligently occupied in our proper employment. It does not refer to any particular occupation, but is used in general sense to denote all the labor which we may have to do; or is a direction to be faithful and industrious in the discharge of all our appropriate duties; compare Ecclesiastes 9:10. The tendency of the Christian religion is to promote industry:
(1) It teaches the value of time.
(2) presents numerous and important things to be done.
(3) it inclines people to be conscientious in the improvement of each moment.
(4) and it takes away the mind from those pleasures and pursuits which generate and promote indolence.
The Lord Jesus was constantly employed in filling up the great duties of his life, and the effect of his religion has been to promote industry wherever it has spread both among nations and individuals. An idle man and a Christian are names which do not harmonize. Every Christian has enough to do to occupy all his time; and he whose life is spent in ease and in doing nothing, should doubt altogether his religion. God has assigned us much to accomplish; and he will hold us answerable for the faithful performance of it; compare John 5:17; John 9:4; 1-Thessalonians 4:11; 2-Thessalonians 3:10, 2-Thessalonians 3:12. All that would be needful to transform the idle, and vicious, and wretched, into sober and useful people, would be to give to them the spirit of the Christian religion; see the example of Paul, Acts 20:34-35.
Fervent - This word is usually applied to water, or to metals so heated as to bubble, or boil. It hence is used to denote ardor, intensity, or as we express it, a glow, meaning intense zeal, Acts 18:25.
In Spirit - In your mind or heart. The expression is used to denote a mind filled with intense ardor in whatever it is engaged. It is supposed that Christians would first find appropriate objects for their labor, and then engage in them with intense ardor and zeal.
Serving - Regarding yourselves as the servants of the Lord. This direction is to be understood as connected with the preceding, and as growing out of it. They were to be diligent and fervid, and in doing so were to regard themselves as serving the Lord, or to do it in obedience to the command of God, and to promote his glory. The propriety of this caution may easily be seen.
(1) the tendency of worldly employments is to take off the affections from God.
(2) people are prone to forget God when deeply engaged in their worldly employments. It is proper to recall their attention to him.
(3) the right discharge of our duties in the various employments of life is to be regarded as serving God. He has arranged the order of things in this life to promote employment. He has made industry essential to happiness and success; and hence, to be industrious from proper motives is to be regarded as acceptable service of God.
(4) he has required that all such employments should be conducted with reference to his will and to his honor, 1-Corinthians 10:31; Ephesians 6:5; Colossians 3:17, Colossians 3:22-24; 1-Peter 4:11. The meaning of the whole verse is, that Christians should be industrious, should be ardently engaged in some lawful employment, and that they should pursue it with reference to the will of God, in obedience to his commands, and to his glory.

Not slothful in business - That God, who forbade working on the seventh day, has, by the same authority, enjoined it on the other six days. He who neglects to labor during the week is as culpable as he is who works on the Sabbath. An idle, slothful person can never be a Christian.
Fervent in spirit - Τῳ πνευματι ζεοντες· Do nothing at any time but what is to the glory of God, and do every thing as unto him; and in every thing let your hearts be engaged. Be always in earnest, and let your heart ever accompany your hand.
Serving the Lord - Ever considering that his eye is upon you, and that you are accountable to him for all that you do, and that you should do every thing so as to please him. In order to this there must be simplicity in the Intention, and purity in the Affections.
Instead of τῳ Κυριῳ δουλευοντες, serving the Lord, several MSS., as DFG, and many editions, have τῳ καιρῳ δουλευοντες, serving the time - embracing the opportunity. This reading Griesbach has received into the text, and most critics contend for its authenticity. Except the Codes Claromontanus, the Codex Augiensis, and the Codex Boernerianus, the first a MS. of the seventh or eighth century, the others of the ninth or tenth, marked in Griesbach by the letters DFG, all the other MSS. of this epistle have Κυριῳ, the Lord; a reading in which all the versions concur. Καιρῳ, the time, is not found in the two original editions; that of Complutum, in 1514, which is the first edition of the Greek Testament ever printed; and that of Erasmus, in 1516, which is the first edition published; the former having been suppressed for several years after it was finished at the press. As in the ancient MSS. the word Κυριῳ is written contractedly, ΚΩ, some appear to have read it καιρῳ instead of Κυριῳ; but I confess I do not see sufficient reason after all that the critics have said, to depart from the common reading.

Not slothful in business; fervent in spirit; (r) serving the Lord;
(r) This verse is well put, for it makes a distinction between Christian duties, and philosophical duties.

Not slothful in business,.... Meaning not worldly business, or the affairs of life; though slothfulness in this respect is scandalous to human nature, and especially in persons under a profession of religion; men should diligently pursue their lawful callings for the support of themselves and families, and the interest of Christ: but spiritual business, the affairs of piety and religion, the service of God, private and public, to which we should not be backward, nor slothful in the performance of; such as preaching, hearing, reading, praying, and other ordinances of God; yea, we should be ready and forward to every good work, and particularly, and which may be here greatly designed, ministering to the poor saints in their necessity; in doing which we show that kind, tender, affectionate, brotherly love, and give that honour and respect, at least that part of it, which is relief, required in the foregoing verse; see Hebrews 6:10. Remarkable is that saying of R. Tarphon (m),
"The day is short, and the work great, , "and workmen slothful", and the reward much, and the master of the house is urgent.''
Fervent in spirit; in their own spirits, for the glory of God, the honour of Christ, and the cause of religion, in imitation of Christ himself, and as Phinehas and Elijah were; which fervency of spirit is opposed to that lukewarmness of soul, Revelation 3:16, that coldness of affection, and leaving of the first love, Revelation 2:4, so much complained of, and resented by Christ in his people: or else in the Spirit of God; for there may be fervency in men's spirits, which comes not from the Spirit of God, as in the Jews, and particularly Saul, before his conversion, who had "a zeal of God, but not according to knowledge", Romans 10:2; but when "the love of God is shed abroad in the heart" by the Spirit of God, Romans 5:5, this will make a man's spirit fervent in the service of God, for which the apostle would have these believers concerned. A disciple of the wise men among the Jews is (n) said to be "fervent", because the law is as a boiling pot unto him; much more should a disciple of Christ be fervent, who has the Gospel of Christ, the love of God, and the grace of the Spirit to inflame his soul with true zeal and fervour.
Serving the Lord; some copies read, "serving time": the likeness of the words, and especially in an abbreviation, may have occasioned this different reading; which should it be followed, is not to be understood in an ill sense, of temporizing, or time serving, of men's accommodating themselves, their sentiments and conduct, according to the times in which they live, in order to escape reproach and persecution; but of redeeming the time, improving every season to do good, and taking every opportunity of serving God. But as the reading our version follows is confirmed by authentic copies, and by the Syriac, and other Oriental versions, it is best to adhere to it: by "the Lord" is here meant either God, Father, Son, and Spirit, who are the alone object of divine service and religious worship; or the Lord Jesus Christ, who most frequently goes by the name of Lord in the New Testament; and who is the one Lord, whose we are and whom we should continually serve, being under the greatest obligations to him, not only as our Creator, but as our head, husband, and Redeemer. Very rightly does the apostle premise fervency in spirit to serving the Lord; for without the Spirit of God there is no true worshipping and serving of him, and which ought to be done with fervency as well as with constancy. The Syriac version renders it, "serve our Lord".
(m) Pirke Abot, c. 2. sect. 15. (n) T. Bab. Taanith, fol. 4. 1.

not slothful in business--The word rendered "business" means "zeal," "diligence," "purpose"; denoting the energy of action.
serving the Lord--that is, the Lord Jesus (see Ephesians 6:5-8). Another reading--"serving the time," or "the occasion"--which differs in form but very slightly from the received reading, has been adopted by good critics [LUTHER, OLSHAUSEN, FRITZSCHE, MEYER]. But as manuscript authority is decidedly against it, so is internal evidence; and comparatively few favor it. Nor is the sense which it yields a very Christian one.

Whatsoever ye do, do it with your might. In every business diligently and fervently serving the Lord - Doing all to God, not to man.