Judges 4:15

15. The Lord discomfited Sisera Confused and confounded him, and gave such an impulse to the warriors of Barak that the vigorous use of their swords was more terrible than Jabin’s chariots, and filled all the Canaanitish host with such sudden alarm that they fled panic stricken before the Israelites. There was also direct miraculous interposition. “They fought from heaven,” says Judges 5:20, and Josephus states that there came a violent tempest and hail, which so obscured the eyes of Sisera’s host that they could not use their arrows and slings, and many were killed by their own horses and chariots. The rain had swelled the Kishon to a flood, so that its rushing waters swept multitudes away. Judges 5:21. The flight of the defeated host would naturally be down the valley towards Harosheth.

Sisera lighted Hoping, probably, to elude pursuit.