Paul had quoted the Old Testament in First Corinthians 9:9 to prove that the church should support preachers financially.
The Law of Moses said,
“For it is written in the law of Moses, ‘You shall not muzzle an ox while it treads out the grain.’ Is it oxen God is concerned about?” (1 Corinthians 9:9).
Paul answered his question,
“Or does He say it altogether for our sakes? For our sakes, no doubt, this is written, that he who plows should plow in hope, and he who threshes in hope should be partaker of his hope” (1 Corinthians 9:10).
Take care of your animals, and know what the Old Testament says, and use both to know how to live.