I Corinthians 9:16, 18
I Corinthians 9:16 NKJV
For if I preach the gospel, I have nothing to boast of, for necessity is laid upon me; yes, woe is me if I do not preach the gospel!
I Corinthians 9:18 NKJV
What is my reward then? That when I preach the gospel, I may present the gospel of Christ without charge, that I may not abuse my authority in the gospel.