שופטים, פרק ו׳, פסוק ל״ג

A massive gathering of enemy forces sets the stage for an impending military campaign. Various nations, specifically Midian, Amalek, and the eastern tribes, joined forces with a single, shared objective: to wage war against the Israelites and bring about their destruction [רלב״ג, אברבנאל].

Advancing on their target, this broad coalition crossed the Jordan River to enter the Land of Israel. Once inside the territory, the united armies established their base in the Jezreel Valley. They specifically chose this location because the valley provided a vast, open expanse, offering the necessary space to accommodate such an enormous military camp [ביאור שטיינזלץ].