They were of the same trade. This place teacheth that Paul, before he came to Corinth, was wont to work with his hands; and that not upon pleasure, but that he might get his living with his handiwork. It is not known where he first learned his occupation; notwithstanding it appeareth by his own testimony that he wrought principally at Corinth. And he showeth a reason, because the false apostles taught freely without taking any thing, that they might craftily creep in, therefore the holy man would not give place to them in that point, lest he should cause the gospel of Christ to be evil spoken of, (1-Corinthians 9:12,15.) But we may easily gather out of this place, that whithersoever he came, (until he was occupied in the continual labor of teachings) he wrought of his occupation, that he might get his living. When Chrysostom saith that Paul was a cordiner he doth no whit dissent from Luke, because they were wont at that time to make tents of skins.

The same craft - Of the same trade or occupation.
And wrought - And worked at that occupation. Why he did it the historian does not affirm; but it seems pretty evident that it was because he had no other means of maintenance. He also labored for his own support in Ephesus Acts 20:34 and at Thessalonica, 2-Thessalonians 3:9-10. The apostle was not ashamed of honest industry for a livelihood; nor did he deem it any disparagement that a minister of the gospel should labor with his own hands.
For by their occupation - By their trade; that is, they had been brought up to this business. Paul had been designed originally for a lawyer, and had been brought up at the feet of Gamaliel. But it was a regular custom among the Jews to train up their sons to some useful employment, that they I might have the means of an honest livelihood. Even though they were instructed in the liberal sciences, yet they deemed a handicraft trade, or some honorable occupation, an indispensable part of education. Thus, Maimonides (in the Tract Talin. Torah, chapter i., section 9) says, "the wise generally practice some of the arts, lest they should be dependent on the charity of others." See Grotius. The wisdom of this is obvious; and it is equally plain that a custom of this kind now might preserve the health and lives of many professional people, and save from ignoble dependence or vice, in future years, many who are trained up in the lap of indulgence and wealth.
They were tentmakers - σκηνοποιοὶ skēnopoioi. There have been various opinions about the meaning of this word. Many have supposed that it denotes "a weaver of tapestry." Luther so translated it. But it is probable that it denotes, as in our translation, "a manufacturer of tents, made of skin or cloth." In Eastern countries, where there was much travel, where there were no inns, and where many were shepherds, such a business might be useful, and a profitable source of living. It was an honorable occupation, and Paul was not ashamed to be employed in it.

He abode with them, and wrought - Bp. Pearce observes that it was a custom among the Jews, even of such as had a better education than ordinary, which was Paul's case, Acts 22:3, to learn a trade, that, wherever they were, they might provide for themselves in case of necessity. And though Paul, in some cases, lived on the bounty of his converts, yet he chose not to do so at Ephesus, Acts 20:34; nor at Corinth or other places, 1-Corinthians 4:12; 2-Corinthians 9:8, 2-Corinthians 9:9; 1-Thessalonians 3:8; and this Paul did for a reason which he gives in 2-Corinthians 11:9-12. While he was at Corinth he was supplied, when his own labor did not procure him enough, "by the brethren which came to him there from Macedonia." It appears that the apostle had his lodging with Aquila and Priscilla; and probably a portion of the profits of the business, after his board was deducted. It was evidently no reproach for a man, at that time, to unite public teaching with an honest useful trade. And why should it be so now? May not a man who has acquired a thorough knowledge of the Gospel way of salvation, explain that way to his less informed neighbors, though he be a tent-maker, (what perhaps we would call a house-carpenter), or a shoemaker, or any thing else? Even many of those who consider it a cardinal sin for a mechanic to preach the Gospel, are providing for themselves and their families in the same way. How many of the clergy, and other ministers, are farmers, graziers, schoolmasters, and sleeping partners in different trades and commercial concerns! A tent-maker, in his place, is as useful as any of these. Do not ridicule the mechanic because he preaches the Gospel to the salvation of his neighbors, lest some one should say, in a language which you glory to have learned, and which the mechanic has not, Mutato nomine, de Te fabula narrator.
There are different opinions concerning that is meant here by the σκηνοποιος, which we translate tent-maker. Some think it means a maker of those small portable tents, formed of skins, which soldiers and travelers usually carried with them on their journeys; others suppose that these tents mere made of linen cloth. Some think that the trade of St. Paul was making hangings or curtains, such as were used at the theatres; others think the σκηνοποιος was a sort of umbrella-maker; others, a weaver, etc., etc. In short, we know not what the trade was. I have generally preferred the notion of a carpenter, or faber lignarius. Whatever it was, it was an honest, useful calling, and Paul got his bread by it.

And because he was of the same craft, Art, occupation, or trade:
he abode with them; in the same house in which they were:
and wrought; with his own hands, to support himself, for he was a stranger in this place; and as yet here was no church to minister to him; and when there was, he would take nothing of them, that the false teachers, who rose up among them, might not make any handle of it against him, and to the prejudice of the Gospel; though otherwise he thought it his just due to receive a maintenance from the churches; and insisted upon it as an ordination of Christ. He learned a trade whilst among the Jews, with whom it was common for their greatest doctors to be brought up to some trade or another; See Gill on Mark 6:3.
for by their occupation they were tent makers; either for the soldiers, and which were made of sack cloth of hair, or of leather, and of the skins of various animals (f), sewed together; hence the phrase, "sub pellibus", "under the skins", is used for to lie in tents (g): or those tents they made, were canopies made of linen, and other things, which were erected in the summer season to shade and screen from the heat of the sun; though others take them for a sort of tapestry, or hangings, which they made for theatres, palaces, and stately rooms; and according to the Syriac version, they were horses' trappings which they made: perhaps they were of the same occupation with Menedemus the philosopher, who was "a sewer of tents" (h).
(f) Alex. ab Alex. Genial. Dier. l. 1. c. 12. (g) Caesar. Comment. l. 5. de Bello Africano. p. 471. Liv. Hist. l. 5. in principio. (h) Laert. Vit. Philosoph. l. 2. p. 172.

tentmakers--manufacturers, probably, of those hair-cloth tents supplied by the goats of the apostle's native province, and hence, as sold in the markets of the Levant, called cilicium. Every Jewish youth, whatever the pecuniary circumstances of his parents, was taught some trade (see on Luke 2:42), and Paul made it a point of conscience to work at that which he had probably been bred to, partly that he might not be burdensome to the churches, and partly that his motives as a minister of Christ might not be liable to misconstruction. To both these he makes frequent reference in his Epistles.

He abode with them. He did this because they were of the same craft. This is the first mention of the handicraft by which so often during his toilsome life Paul earned his daily bread. Every Jewish boy was taught a trade, and Paul no doubt learned his in Tarsus. Compare Acts 20:34; 1-Thessalonians 2:9; 2-Thessalonians 3:8; 1-Corinthians 4:12.

They were tent makers by trade - For it was a rule among the Jews (and why is it not among the Christians?) to bring up all their children to some trade, were they ever so rich or noble.