1 Corinthians 9:6-9

Or do only Barnabas and I not have a right to refrain from working? Who at any time serves as a soldier at his own expense? Who plants a vineyard and does not eat the fruit of it? Or who tends a flock and does not use the milk of the flock? I am not speaking these things according to human judgment, am I? Or does not the Law also say these things? For it is written in the Law of Moses, “YOU SHALL NOT MUZZLE THE OX WHILE HE IS THRESHING.” God is not concerned about oxen, is He?