For though I be free from all men, yet have I made myself servant unto all, that I might gain the more.

People's New Testament

9:19 For though I am free, etc. He shows why he used this self denial. In order that he might gain souls, he was willing to become the servant of all, and to deny himself all things.

Wesley's Notes

9:19 I made myself the servant of all - I acted with as self - denying a regard to their interest, and as much caution not to offend them, as if I had been literally their servant or slave. Where is the preacher of the gospel who treads in the same steps?

Jamieson-Fausset-Brown Bible Commentary

19. free from all men-that is, from the power of all men.

gain the more-that is, as many of them ("all men") as possible. "Gain" is an appropriate expression in relation to a "reward" (1Th 2:19, 20); he therefore repeats it frequently (1Co 9:20-22).

Matthew Henry's Concise Commentary

9:15-23 It is the glory of a minister to deny himself, that he may serve Christ and save souls. But when a minister gives up his right for the sake of the gospel, he does more than his charge and office demands. By preaching the gospel, freely, the apostle showed that he acted from principles of zeal and love, and thus enjoyed much comfort and hope in his soul. And though he looked on the ceremonial law as a yoke taken off by Christ, yet he submitted to it, that he might work upon the Jews, do away their prejudices, prevail with them to hear the gospel, and win them over to Christ. Though he would transgress no laws of Christ, to please any man, yet he would accommodate himself to all men, where he might do it lawfully, to gain some. Doing good was the study and business of his life; and, that he might reach this end, he did not stand on privileges. We must carefully watch against extremes, and against relying on any thing but trust in Christ alone. We must not allow errors or faults, so as to hurt others, or disgrace the gospel.