1 Corinthians 9:10-13

Or does He speak entirely for our sake? Yes, it was written for our sake: The plowman ought to plow in hope, and the thresher to thresh in hope of sharing the harvest. If we have sown [the good seed of] spiritual things in you, is it too much if we reap material things from you? If others share in this rightful claim over you, do not we even more? However, we did not exercise this right, but we put up with everything so that we will not hinder [the spread of] the good news of Christ. Do you not know that those who officiate in the sacred services of the temple eat from the temple [offerings of meat and bread] and those who regularly attend the altar have their share from the [offerings brought to the] altar? [Deut 18:1]