They fought from heaven The prophetess, having in the foregoing verse mentioned who were the allies and helpers of Jabin, does here, in a very magnificent manner, represent who were the allies and helpers of Israel. They fought from heaven on this side; namely, the very angels of God themselves, the hosts of heaven, the armies of the Almighty. The very stars in their courses fought for Israel against Sisera The elements, by the order of God, came to their assistance. The air and waters ranged themselves on their side; the rivers, even the small streams, lift up themselves and swept away their enemies. This is the magnificent and tremendous idea which the prophetess gives us of this victory over Sisera: see on Judges 4:15. In the poetical scriptures, thunder and lightning are represented as the artillery of heaven. The Prophet Habakkuk, speaking of the defeat of the confederate kings of Canaan by Joshua, where there is no mention of thunder and lightning in the history, thus addresses Jehovah, Habakkuk 3:11
The sun and moon stood still in their habitation;
By their light thine arrows went abroad;
And by their shining thy glittering spear.