יהושע, פרק י״ג, פסוק ט״ז

Mapping out a tribal inheritance required clear geographical markers, using natural landscapes and prominent cities to define the exact limits of the land.

The boundary for this specific territory begins at Aroer, a city situated right on the edge of the Arnon River. From there, the inheritance expands to include the city located down within the river valley itself, along with the entire surrounding plain. This flatland stretches outward from the river region and continues all the way up to the city of Medeba [ביאור שטיינזלץ].