שופטים, פרק ד׳, פסוק כ״ג

The collapse of a powerful regime is often triggered by the sudden destruction of the military force that protects it. God brought about the defeat of the Canaanites by dealing a crushing blow to their army. On one decisive day, the Israelites captured and completely dismantled the enemy's war chariots, and the Canaanite army commander himself was killed [ביאור שטיינזלץ, צאינה וראינה].

The honor and survival of any king depend entirely on the success of his military leaders. Because of this reality, the exact moment the commander Sisera died and his army fell in battle, King Jabin of Canaan was automatically stripped of his power and subdued [אברבנאל].

This massive defeat was not an isolated event, but a major turning point in the conflict. From that day forward, the Israelites continually gained strength and pressed their advantage against the Canaanites. This momentum carried on until they achieved total victory and the final destruction of Jabin [אברבנאל, צאינה וראינה].