Numbers 18:3-13

3 And they shall keep thy charge, and the charge of all the tabernacle: only they shall not come nigh the vessels of the sanctuary and the altar, that neither they, nor ye also, die.
4 And they shall be joined to thee, and keep the charge of the tabernacle of the congregation, for all the service of the tabernacle: and a stranger shall not come nigh to you.
5 And ye shall keep the charge of the sanctuary, and the charge of the altar: that there be no wrath any more upon the children of Israel.
6 And I, behold, I have taken your brethren the Levites from among the children of Israel: to you [they are] given [as] a gift for the LORD, to do the service of the tabernacle of the congregation.
7 Therefore thou and thy sons with thee shall keep your priest's office for every thing of the altar, and within the vail; and ye shall serve: I have given your priest's office [to you as] a service of gift: and the stranger that cometh nigh shall be put to death.
8 And the LORD spoke to Aaron, Behold, I also 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 by reason of the anointing, and to thy sons, by an ordinance for ever.
9 This shall be thine of the most holy things [reserved] from the fire: every oblation of theirs, every meat-offering of theirs, and every sin-offering of theirs, and every trespass-offering of theirs, which they shall render to me, [shall be] most holy for thee and for thy sons.
10 In the most holy [place] shalt thou eat it; every male shall eat it: it shall be holy to thee.
11 And this [is] thine; the heave-offering of their gift, with all the wave-offerings of the children of Israel: I have given them to thee, and to thy sons, and to thy daughters with thee, by a statute for ever: every one that is clean in thy house shall eat of it.
12 All the best of the oil, and all the best of the wine, and of the wheat, the first-fruits of them which they shall offer to the LORD, them have I given to thee.
13 [And] whatever is first ripe in the land, which they shall bring to the LORD, shall be thine; every one that is clean in thy house shall eat [of] it.
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