The Lord directed those who preach the gospel to live by the gospel, that is, to maintain at the expense of the faithful that life for which food and clothing are essential.
(See his humility of mind and his soul pure from envy, how he takes care not to conceal him whom he knew to be a partaker with himself in this perfection.) For if the other things be common, how is not this common? Both they and we are apostles and are free, and have seen Christ, and have exhibited the works of Apostles. Therefore we likewise have a right both to live without working and to be supported by our disciples.
For there is extant withal an Epistle to the Hebrews under the name of Barnabas-a man sufficiently accredited by God, as being one whom Paul has stationed next to himself in the uninterrupted observance of abstinence: "Or else, I alone and Barnabas, have not we the power of working? "