Ezek 44:10-14

10But the Levites who went far from me, going astray from me after their idols when Israel went astray, shall bear their punishment.11They shall be ministers in my sanctuary, having oversight at the gates of the temple, and serving in the temple; they shall slaughter the burnt offering and the sacrifice for the people, and they shall attend on them and serve them.12Because they ministered to them before their idols and made the house of Israel stumble into iniquity, therefore I have sworn concerning them, says the Lord GOD, that they shall bear their punishment.13They shall not come near to me, to serve me as priest, nor come near any of my sacred offerings, the things that are most sacred; but they shall bear their shame, and the consequences of the abominations that they have committed.14Yet I will appoint them to keep charge of the temple, to do all its chores, all that is to be done in it.