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.
18. What is my reward?—The answer is in 1Co 9:19; namely, that by making the Gospel without charge, where I might have rightfully claimed maintenance, I might "win the more."
of Christ—The oldest manuscripts and versions omit these words.
abuse—rather "that I use not to the full my power." This is his matter for "glorying"; the "reward" ultimately aimed at is the gaining of the more (1Co 9:19). The former, as involving the latter, is verbally made the answer to the question, "What is my reward?" But really the "reward" is that which is the ultimate aim of his preaching without charge, namely, that he may gain the more; it was for this end, not to have matter of glorying, that he did so.