Deuteronomy 1:4
"After he had slain Sihon the king of the Amorites, which dwelt in Heshbon, and Og the king of Bashan, which dwelt at Astaroth in Edrei:"
Cross References (ranked by relevance)
Nehemiah 9:22
Moreover thou gavest them kingdoms and nations, and didst divide them into corners: so they possessed the land of Sihon, and the land of the king of Heshbon, and the land of Og king of Bashan.
Psalm 135:11
Sihon king of the Amorites, and Og king of Bashan, and all the kingdoms of Canaan: