19 For though I was free from all, I brought myself under bondage to all, that I might gain the more. 20 To the Jews I became as a Jew, that I might gain Jews; to those who are under the law, as under the law, that I might gain those who are under the law; 21 to those who are without law, as without law (not being without law toward God, but under law toward Christ), that I might win those who are without law. 22 To the weak I became as weak, that I might gain the weak. I have become all things to all men, that I may by all means save some. 23 Now I do this for the sake of the Good News, that I may be a joint partaker of it.

24 Don’t you know that those who run in a race all run, but one receives the prize? Run like that, that you may win. 25 Every man who strives in the games exercises self-control in all things. Now they do it to receive a corruptible crown, but we an incorruptible. 26 I therefore run like that, as not uncertainly. I fight like that, as not beating the air, 27 but I beat my body and bring it into submission, lest by any means, after I have preached to others, I myself should be rejected.

Matthew Henry's Commentary on 1 Corinthians 9:19-27

Commentary on 1 Corinthians 9:15-23

(Read 1 Corinthians 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.

Commentary on 1 Corinthians 9:24-27

(Read 1 Corinthians 9:24-27)

The apostle compares himself to the racers and combatants in the Isthmian games, well known by the Corinthians. But in the Christian race all may run so as to obtain. There is the greatest encouragement, therefore, to persevere with all our strength, in this course. Those who ran in these games were kept to a spare diet. They used themselves to hardships. They practised the exercises. And those who pursue the interests of their souls, must combat hard with fleshly lusts. The body must not be suffered to rule. The apostle presses this advice on the Corinthians. He sets before himself and them the danger of yielding to fleshly desires, pampering the body, and its lusts and appetites. Holy fear of himself was needed to keep an apostle faithful: how much more is it needful for our preservation! Let us learn from hence humility and caution, and to watch against dangers which surround us while in the body.