Numbers 18:13-15

13All the land’s firstfruits that they bring to the LORD will be yours. Everyone in your household who is ceremonially clean may eat it. 14“Everything in Israel that is devoted The Hebrew term refers to the irrevocable giving over of things or persons to the Lord. to the LORD is yours. 15The first offspring of every womb, both human and animal, that is offered to the LORD is yours. But you must redeem every firstborn son and every firstborn male of unclean animals.