Joshua 17:15-16

15So Joshua answered them, “If you are a great people, then go up to the forest country and clear a place for yourself there in the land of the Perizzites and the giants, since the mountains of Ephraim are too confined for you.”

16But the children of Joseph said, “The mountain country is not enough for us; and all the Canaanites who dwell in the land of the valley have chariots of iron, both those who are of Beth Shean and its towns and those who are of the Valley of Jezreel.”