The eastern border of Judah was the Salt Sea, up to where the Jordan River ends. The northern boundary ran from the northern bay of the sea where the Jordan ends
From there it went to the border of Debir through the valley of Achor, and turned north towards Gilgal, opposite the heights of Adummim to the south of the valley. Then the boundary continued to the waters of En-shemesh and out to En-rogel.