1 Corinthians 9:17-19
New International Version
17 If I preach voluntarily, I have a reward;(A) if not voluntarily, I am simply discharging the trust committed to me.(B) 18 What then is my reward? Just this: that in preaching the gospel I may offer it free of charge,(C) and so not make full use of my rights(D) as a preacher of the gospel.