Numbers 18:7-9

Modern English Version

⁷ And you and your sons with you will attend to your priesthood for everything at the altar, and within the veil, and you will serve. I have given your priesthood to you as a gift service, and the foreigner that comes near will be put to death.

Offerings for Priests and Levites

⁸ The Lord spoke to Aaron: I have certainly given you the charge of the offerings made to Me, all the hallowed gifts of the children of Israel. To you and to your sons have I given them as a portion, as an ordinance forever. ⁹ This will be yours of the most holy things, reserved from the fire: All of their offerings, all of their grain offerings and all of their sin offerings, and all of their guilt offerings, which they render to Me, will be most holy for you and for your sons.