Ezekiel 44:9-11

New Century Version

⁹ This is what the Lord God says: Foreigners who are not circumcised in flesh and who do not give themselves to serving me may not enter my Temple. Not even a foreigner living among the people of Israel may enter.

¹⁰ “‘But the Levites who stopped obeying me when Israel left me and who followed their idols must be punished for their sin. ¹¹ These Levites are to be servants in my Holy Place. They may guard the gates of the Temple and serve in the Temple area. They may kill the animals for the burnt offering and the sacrifices for the people. They may stand before the people to serve them.