'Mount Ephraim' in the Bible

And there will be one man from Ramathaim-Zophim, from mount Ephraim, and his name Elkanah, son of Jeroham, son of Elihu, son of Tohu, son of Zuph, an Ephrathite:

And he will pass over in mount Ephraim, and he will pass over into the land of Shalisha, and they found not: and they will pass over into the land of Shalim, and not there: and he will pass over into the land of the Jaminite, and they found not

And every man of Israel being hid in mount Ephraim, heard that the rovers fled, and they will cleave together, also they after them in the battle.