Ezekiel 44:9-11

New Catholic Bible

⁹ Thus says the Lord God: No foreigner, uncircumcised in heart and flesh, shall be permitted to enter my sanctuary, not even those foreigners who dwell among the Israelites.

¹⁰ Levites. But as for the Levites who abandoned me when Israel strayed far from me by following its idols, they must suffer the consequences for their iniquity. ¹¹ They may be permitted to serve as ministers in my sanctuary, with the responsibility of guarding the gates of the temple and serving in the temple. They may be allowed to slaughter the burnt offerings and the sacrifices for the people as well as attending to the needs of the people and serving them.