but the hill-country shall be yours; for though it is a forest, you shall cut it down, and the goings out of it shall be yours; for you shall drive out the Canaanites, though they have chariots of iron, and though they are strong.
Although the Joseph tribes received the best part of Canaan, they were still not satisfied. They wanted more land, but they did not want to work for it or fight for it. Joshua told them that if they cleared the forests and drove out the Canaanites, they would find that they had plenty of land within the territory already allotted to them (14-18).