Jezekiel 44:23

23 And they shall teach my people between holy and profane, and they shall make known to them between unclean and clean.

Jezekiel 44:23 In-Context

21 And no priest shall drink any wine, when they go into the inner court.
22 Neither shall they take to themselves to wife a widow, or one that is put away, but a virgin of the seed of Israel: but if there should happen to be a priest's widow, they shall take .
23 And they shall teach my people between holy and profane, and they shall make known to them between unclean and clean.
24 And these shall attend at a judgment of blood to decide it: they shall rightly observe my ordinances, and judge my judgments, and keep my statutes and my commandments in all my feasts; and they shall hallow my sabbaths.
25 And they shall not go in to the dead body of a man to defile themselves: only may defile himself for a father, or for a mother, or for a son, or for a daughter, or for a brother, or for his sister, who has not been married.

The Brenton translation of the Septuagint is in the public domain.