1 Corinthians 9:15-18

Mace(i) 15 but I have not made use of these advantages. neither have I writ this to obtain such maintenance: for I had rather die for want, than be deprived of such matter of glorying. 16 for in barely preaching the gospel, I have nothing to glory in: because I am under an obligation to do it; yea, wo is unto me if I preach not the gospel. 17 now if I do this willingly, I have a reward: but if against my will, it is a dispensation of trust which must be discharged. 18 whence then is my reward? why, from my preaching the gospel of Christ gratis, without making use of the privilege which the gospel gives me.