1 Corinthians 9:16, 18
1 Corinthians 9:16 NIV
For when I preach the gospel, I cannot boast, since I am compelled to preach. Woe to me if I do not preach the gospel!
1 Corinthians 9:18 NIV
What then is my reward? Just this: that in preaching the gospel I may offer it free of charge, and so not make full use of my rights as a preacher of the gospel.