Deuteronomy 4:49 WEB

⁴⁷  They took his land in possession, and the land of Og king of Bashan, the two kings of the Amorites, who were beyond the Jordan toward the sunrise;

⁴⁸  from Aroer, which is on the edge of the valley of the Arnon, even to Mount Sion (the same is Hermon),

⁴⁹  and all the Arabah beyond the Jordan eastward, even to the sea of the Arabah, under the slopes of Pisgah.