Joshua 17:13-18 gives us a very interesting scenario. The sons of Joseph come to Joshua with a complaint. They are too numerous and needed more land. Joshua gave them more land; the only problem was that on this land, in the hills, there are Rephaim (very large people), and in the valleys there are Canaanites who have iron chariots. The sons of Joseph seem reluctant; Joshua seemed confident. He tells them that they have a large number with them and that they were strong enough to drive the enemies out.
Throughout the Old Testament, we are told that God promised land to Israel but then they had to go fight for it. They also had to be clean of idolatry; God promised then to help them and win their battles. We can relate this to New Testament believers to yield everything to God. As we do, we will see victory after victory in our lives spiritually even as the Israelites did when they yielded to their God. -Pastor Joyce