1 Corinthians 9:8-10

Am I merely giving you my own opinions, or does the Torah teach the same things? For it is written in the law of Moses: You should never put a muzzle over the mouth of an ox while he is treading out the grain. Tell me, is God only talking about oxen here? Doesn’t he also give us this principle so that we won’t withhold support from his workers? It was written so that we would understand that the one spiritually “plowing” and spiritually “treading out the grain” also labors with the expectation of enjoying the harvest.