1 Corinthians Chapter 9, Verse 18
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18: τις ουν μοι εστιν ο μισθος ινα ευαγγελιζομενος αδαπανον θησω το ευαγγελιον του χριστου εις το μη καταχρησασθαι τη εξουσια μου εν τω ευαγγελιω
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.
18: What is my reward then? That preaching the gospel, I may deliver
the gospel without charge, that I abuse not my power in the gospel.
What is my reward then? What is the source of my reward? or what is there in my conduct that will show that I am entitled to reward? What is there that will demonstrate that my heart is in the work of the ministry; that I am free and voluntary, and that I am not urged by mere necessity? Though I have been called by miracle, and though necessity is laid upon me, so that I cannot but preach the gospel, yet how shall I so do it as to make it proper for God to reward me as a voluntary agent? Paul immediately states the circumstance that showed that he was entitled to the reward; and that was, that he denied himself, and was willing to forego his lawful enjoyments, and even his rights, that he might make the gospel without charge.
I may make the gospel of Christ without charge. Without expense to those who hear it. I will support myself by my own labour, and will thus show that I am not urged to preaching by mere "necessity," but that I love it.
That I abuse not my power in the gospel. Paul had a right to a support. This power he might urge. But to urge it in his circumstances would be a hinderance of the gospel. And to do that would be to abuse his power, or to pervert it to purposes for which it was never designed.

