Ezekiel 44:20-30

20 Neither shall they shave their heads, nor wear long hair: but they shall only poll their heads.
21 And no priest shall drink wine when he is to go into the inner court.
22 Neither shall they take to wife a widow, nor one that is divorced, but they shall take virgins of the seed of the house of Israel: but they may take a widow also, that is, the widow of a priest.
23 And they shall teach my people the difference between holy and profane, and shew them how to discern between clean and unclean.
24 And when there shall be a controversy, they shall stand in my judgments, and shall judge: they shall keep my laws, and my ordinances in all my solemnities, and sanctify my sabbaths.
25 And they shall come near no dead person, lest they be defiled, only their father and mother, and son and daughter, and brother and sister, that hath not had another husband: for whom they may become unclean.
26 And after one is cleansed, they shall reckon unto him seven days.
27 And in the day that he goeth into the sanctuary, to the inner court, to minister unto me in the sanctuary, he shall offer for his sin, saith the Lord God.
28 And they shall have no inheritance, I am their inheritance: neither shall you give them any possession in Israel, for I am their possession.
29 They shall eat the victim both for sin and for trespass: and every vowed thing in Israel shall be theirs.
30 And the firstfruits of all the firstborn, and all the libations of all things that are offered, shall be the priest’s: and you shall give the firstfruits of your meats to the priest, that he may return a blessing upon thy house.