1 Corinthians 9:7-9

New Revised Standard Version, Anglicised Catholic Edition

⁷ Who at any time pays the expenses for doing military service? Who plants a vineyard and does not eat any of its fruit? Or who tends a flock and does not get any of its milk?

⁸ Do I say this on human authority? Does not the law also say the same? ⁹ For it is written in the law of Moses, ‘You shall not muzzle an ox while it is treading out the grain.’ Is it for oxen that God is concerned?