1 Cor 9:16-18
16 If I proclaim the Message, it's not to get something out of it for myself. I'm compelled to do it, and doomed if I don't! 17 If this was my own idea of just another way to make a living, I'd expect some pay. But since it's not my idea but something solemnly entrusted to me, why would I expect to get paid? 18 So am I getting anything out of it? Yes, as a matter of fact: the pleasure of proclaiming the Message at no cost to you. You don't even have to pay my expenses!