King James Version
For if I do this thing willingly, I have a reward: but if against my will, a dispensation of the gospel is committed unto me.English Standard Version
For if I do this of my own will, I have a reward, but not of my own will, I am still entrusted with a stewardship.New International Version
If I preach voluntarily, I have a reward; if not voluntarily, I am simply discharging the trust committed to me.