But the LORD said to Joshua, "Do not be afraid because of them, for tomorrow about this time I will deliver all of them slain before Israel. You shall hamstring their horses and burn their chariots with fire."
Joshua 11:6
Surrounding context
11:5 And when all these kings had met together, they came and camped together at the waters of Merom to fight against Israel.
11:6 But the LORD said to Joshua, "Do not be afraid because of them, for tomorrow about this time I will deliver all of them slain before Israel. You shall hamstring their horses and burn their chariots with fire."
11:7 So Joshua and all the people of war with him came against them suddenly by the waters of Merom, and they attacked them.