Numbers 18:7-11

⁷But thou and thy sons with thee shall attend to your priesthood for all that concerneth the altar, and for that which is inside the veil; and ye shall perform the service: I give you your priesthood as a service of gift, and the stranger that cometh near shall be put to death.

⁸And Jehovah spoke to Aaron, And I, behold, I have given thee the charge of my heave-offerings, of all the hallowed things of the children of Israel; to thee have I given them, because of the anointing, and to thy sons by an everlasting statute.

⁹This shall be thine of the most holy things, reserved from the fire: every offering of theirs, of all their oblations, and of all their sin-offerings, and of all their trespass-offerings, which they render unto me, it is most holy for thee and for thy sons.

¹⁰As most holy shalt thou eat it: every male shall eat it; it shall be holy unto thee.

¹¹And this shall be thine: the heave-offering of their gift, with all the wave-offerings of the children of Israel; I have given them unto thee, and to thy sons and to thy daughters with thee, by an everlasting statute; every one that is clean in thy house shall eat of it.