Ezekiel 44:9-14

9This is what the Lord GOD says: No foreigner uncircumcised in heart and flesh may enter My sanctuary—not even a foreigner who lives among the Israelites.

10Surely the Levites who wandered away from Me when Israel went astray, and who wandered away from Me after their idols, will bear the consequences of their iniquity. 11Yet they shall be ministers in My sanctuary, having charge of the gates of the temple and ministering there. They shall slaughter the burnt offerings and other sacrifices for the people and stand before them to minister to them.

12Because they ministered before their idols and became a stumbling block of iniquity to the house of Israel, therefore I swore with an uplifted hand concerning them that they would bear the consequences of their iniquity, declares the Lord GOD. 13They must not approach Me to serve Me as priests or come near any of My holy things or the most holy things. They will bear the shame of the abominations they have committed. 14Yet I will appoint them to keep charge of all the work for the temple and everything to be done in it.