1 Corinthians 9:16-17

Matthew(i) 16 In that I preache the Gospel, I haue nothinge to reioyce of. For necessytye is put vnto me. Wo is it vnto me yf I preach not the Gospel. 17 Yf I do it wyth a good wil, I haue a rewarde. But yf I do it against my wyl, an offyce is committed vnto me.