1 Corinthians 9:12

If others partake of this right over you, do not we yet more? Nevertheless we did not use this right; but we bear all things, that we may cause no hindrance to the gospel of Christ. [Since Paul had left Corinth, other teachers had been supported by the church, and this stopped them from denying Paul's right to support. The apostle had not used this right, for to do so would have hindered him in planting the church. It would retard the progress of any movement to demand salaries under it before demonstrating that it was either beneficent or necessary. To have demanded maintenance subsequently would have given Paul's enemies a chance to impugn his motives, and say that he labored for earthly gain. Fifth argument: Priests, whose office, like the apostolic, is purely sacred, are universally maintained by sharing in the sacrifices which they offer.]