'Uncircumcised In Heart' in the Bible

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

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

“You men who are stiff-necked and uncircumcised in heart and ears are always resisting the Holy Spirit; you are doing just as your fathers did.