'Mount Ephraim' in the Bible

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 from mount Ephraim. And he renewed the altar of Jehovah before the porch of Jehovah.

And Jehoshaphat lived at Jerusalem. And he went out again among the people from Beer-sheba to mount Ephraim, and brought them back to Jehovah, the God of their fathers.