2 Samuel 18:6
Then the army marched out to the field to fight against Israel. The battle took place in the forest of Ephraim.
Joshua 17:18
The whole hill country will be yours; though it is a forest, you can clear it and it will be entirely yours. You can conquer the Canaanites, though they have chariots with iron-rimmed wheels and are strong."
Joshua 17:15
Joshua replied to them, "Since you have so many people, go up into the forest and clear out a place to live in the land of the Perizzites and Rephaites, for the hill country of Ephraim is too small for you."
Judges 12:4-6
Jephthah assembled all the men of Gilead and they fought with Ephraim. The men of Gilead defeated Ephraim, because the Ephraimites insulted them, saying, "You Gileadites are refugees in Ephraim, living within Ephraim's and Manasseh's territory."