'Mountains of Ephraim' in the Bible

That is not the matter. But a man from the mountains of Ephraim, whose name [is] Sheba the son Bicri, has lifted up his hand against the king, against David. Give only him to us, and I will depart from the city." The woman said to Joab, "Look, his head [is] being thrown down to you over the wall."

And Abijah stood up upon mount Zemaraim, which is in the mountains of Ephraim, and said, Hear me, you Jeroboam, and all Israel;

And when Asa heard these words, and the prophecy of Oded the prophet, he took courage, and put away the abominable idols out of all the land of Judah and Benjamin, and out of the cities which he had taken in the mountains of Ephraim, and repaired the altar of the LORD, that was before the vestibule of the LORD.

Yes, a time is coming when watchmen will call out on the mountains of Ephraim, "Come! Let us go to Zion to worship the Lord our God!"'"