1 Corinthians 9:6-8

Or I only and Barnabas, have we not a right to forbear working? What soldier ever serveth at his own charges? who planteth a vineyard, and eateth not the fruit thereof? or who feedeth a flock, and eateth not of the milk of the flock? Do I speak these things after the manner of men? or saith not the law also the same?