1 Corinthians 9:10

For our sakes-this is written; to show that it is the will of God that ministers of the gospel should receive support from the people for whom they labor, and that all who labor are entitled to a just reward for their services. Specific directions contained in the Old Testament, even with regard to beasts and inanimate things, are often illustrations of principles, and are designed to instruct men in all ages as to the character and will of God, and the nature, variety, and extent of human duties.