heal the sick, cleanse the lepers, raise the dead, cast out devils: what ye have received gratis, give gratis.

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.

If I have degraded myself for your advantage by preaching the holy gospel to you gratis, is that such a trespass?

nor did we eat bread gratis from any man, but in labor and toil, working night and day in order not to burden any of you.