Exodus 12:48
And when a stranger shall sojourn with you, and will keep the passover to the LORD, let all his males be circumcised, and then let him come near and keep it; and he shall be as one that is born in the land: for no uncircumcised person shall eat thereof.
Torrey's Topical Textbook—AKJV

Deuteronomy 23:1-4
He that is wounded in the stones, or has his privy member cut off, shall not enter into the congregation of the LORD.
Torrey's Topical Textbook—AKJV

Ezekiel 44:7,9
In that you have brought into my sanctuary strangers, uncircumcised in heart, and uncircumcised in flesh, to be in my sanctuary, to pollute it, even my house, when you offer my bread, the fat and the blood, and they have broken my covenant because of all your abominations.
Torrey's Topical Textbook—AKJV