'Separated' in the Bible

The Lord will bring on you, your people, and the house of your father, such a time as has never been since Ephraim separated from Judah—the king of Assyria is coming.”

Neither let the son of the stranger, that hath joined himself to the LORD, speak, saying, The LORD hath utterly separated me from his people: neither let the eunuch say, Behold, I am a dry tree.

But your iniquities have separated between you and your God, and your sins have hid his face from you, that he will not hear.