1 Corinthians 9:7-9

7Think about these examples: A soldier never has to pay for his own food and clothes. A farmer who plants vines will eat some of the grapes. A person who takes care of sheep or goats will drink some of the milk from those animals. You know that is what always happens.

8I am not just telling you human ideas. God's Law teaches the same thing.

9God's Law that he gave to Moses says this: ‘Do not tie shut the mouth of your ox while it walks on your grain.’ But God's Law does not teach this only to help bulls.