Jezekiel 44:9

9 Therefore thus saith the Lord God; No alien, uncircumcised in heart or uncircumcised in flesh, shall enter into my sanctuary, of all the children of strangers that are in the midst of the house of Israel.

Jezekiel 44:9 In-Context

7 that ye have brought in aliens, uncircumcised in heart, and uncircumcised in flesh, to be in my sanctuary, and to profane it, when ye offered bread, flesh, and blood; and ye transgressed my covenant by all your iniquities;
8 and ye appointed to keep the charges in my sanctuary.
9 Therefore thus saith the Lord God; No alien, uncircumcised in heart or uncircumcised in flesh, shall enter into my sanctuary, of all the children of strangers that are in the midst of the house of Israel.
10 But as for the Levites who departed far from me when Israel went astray from me after their imaginations, they shall even bear their iniquity.
11 yet they shall minister in my sanctuary, porters at the gates of the house, and serving the house: they shall slay the victims and the whole-burnt-offerings for the people, and they shall stand before the people to minister to them.

The Brenton translation of the Septuagint is in the public domain.