Ezekiel 44:7-11

when you brought in foreigners, uncircumcised in heart and uncircumcised in flesh, to be in My sanctuary to profane it, My house, when you offered My food, the fat, and the blood and they broke My covenant—this in addition to all your abominations.

And you have not taken responsibility for My holy things yourselves, but you have appointed foreigners to take responsibility for My sanctuary.”

‘This is what the Lord God says: “No foreigner uncircumcised in heart and uncircumcised in flesh, of all the foreigners who are among the sons of Israel, shall enter My sanctuary.

But the Levites who went far from Me when Israel went astray, who went astray from Me following their idols, shall suffer the punishment for their wrongdoing.

Yet they shall be ministers in My sanctuary, having oversight at the gates of the house and ministering in the house; they shall slaughter the burnt offering and the sacrifice for the people, and they shall stand before them to minister to them.