Matthew Poole and continuators on 1 Corinthians 9:18

18 What is my reward then ? Verily, that when I preach the gospel, I may make the gospel of Christ without charge , that I abuse not my power in the gospel .

What then is the ground of my expectation of a greater reward? Or wherein is the glorying I before mentioned? Not in the performance of the work, for as to that I am under a necessity to do it, and under a penalty, if I neglect it:

but it lieth here, that when I preach the Gospel, I do it freely, and make it without charge; a thing, which as to the substance of the work, he was not by any Law of God bound to do, yet was not this in Paul a work of Supererogation; for circumstances might so rule, and (doubtless Paul apprehended they did so) that it might be his duty so to do. For though the Minister may lawfully take maintenance from the people, where he cannot support himself without their assistance; yet if the case be such, that he can subsist without it, and the people be so poor, that they are not able to give it; or if he seeth it will hinder the Gospel, keeping many from coming within the sound of what must be chargeable to them, and open the mouths of Enemies; it is matter of duty to him, under such circumstances, to preach freely. Though considering the thing in it self separately from such circumstances, the Minister may lawfully enough require and expect such maintenance.

That (saith the Apostle) I abuse not my power in the Gospel. Some think that the word here translated abuse, might better have been translated use, as it signified Chap. 7.31. But it generally signifies abuse, so as there is no reason to vary from the common usage of it, according to which it teaches us this remarkable Lesson, That so to use a liberty which God hath left us as to actions, as that by our use of it the Glory of God, or the good of others is hindred, is to abuse it, that is, not to use it to that true end for which God hath betrusted us with it. For this is certain, that God hath betrusted us with no power or liberty to be used to the prejudice of his Glory, which is the great end of our lives, or to the prejudice of the spiritual good and advantage of others. All such use of our liberty in any thing, is indeed an abuse of it.