Deuteronomy 3:11
10 all the cities of the plateau, all of Gilead and Bashan as far as Salecah and Edrei, cities of the kingdom of Og in Bashan. 11 Only King Og of Bashan was left of the remaining Rephaites. (It is noteworthy that his sarcophagus was made of iron. Does it not, indeed, still remain in Rabbath of the Ammonites? It is 13½ feet long and 6 feet wide according to standard measure.) 12 This is the land we brought under our control at that time: The territory extending from Aroer by the Wadi Arnon and half the Gilead hill country with its cities I gave to the Reubenites and Gadites.
Joshua 12:5
3 His kingdom included the eastern rift valley from the Sea of Kinnereth to the sea of the rift valley (the Salt Sea), including the route to Beth Jeshimoth and the area southward below the slopes of Pisgah. 4 The territory of King Og of Bashan, one of the few remaining Rephaites, who lived in Ashtaroth and Edrei 5 and ruled over Mount Hermon, Salecah, all Bashan to the border of the Geshurites and Maacathites, and half of Gilead as far as the border of King Sihon of Heshbon. 6 Moses the Lord’s servant and the Israelites defeated them, and Moses the Lord’s servant assigned their land to Reuben, Gad, and the half-tribe of Manasseh.
Notes and References
"... Opposition to Israel among the Amorites was led by the kings Sihon of Heshbon and Og of Bashan (Deuteronomy 3). Joshua 12:5 records that Og “ruled over Mount Hermon and Salecah and all Bashan to the boundary of the Geshurites and the Maacathites.” Og was a giant, as Deuteronomy 3:11 makes clear: “only Og the king of Bashan was left of the remnant of the Rephaim. Behold, his bed was a bed of iron. Is it not in Rabbah of the Ammonites?” Nine cubits was its length, and four cubits its breadth, according to the common cubit.168 The ancient capital of Bashan was Ashtaroth. Deuteronomy 1:4 and Joshua 12:4 note that Og also lived in Edrei. These two cities had very dark spiritual associations not only for Israelites, but Canaanites ..."
Heiser, Michael S. Reversing Hermon: Enoch, the Watchers & the Forgotten Mission of Jesus Christ (p. 87) Defender Publishing, 2017