Yahweh sold them into the hand of Jabin king of Canaan, who reigned in Hazor; the captain of whose host was Sisera, who lived in Harosheth of the Gentiles.
The Canaanites’ 900 iron war chariots gave them complete control of the flatter and dryer portions of this area. The Israelites had to live in the hills. These chariots were state-of-the-art weapons at this time. Compare Pharaoh’s chariots in the Exodus account. Chapter 5 also recalls the Exodus.