Numbers 21:24-26

24Then 1Israel struck him with the edge of the sword, and took possession of his land from the Arnon to the Jabbok, as far as the sons of Ammon; for the 2border of the sons of Ammon was 3Jazer.

25Israel took all these cities, and 4Israel lived in all the cities of the Amorites, in Heshbon and in all her 5villages.

26For Heshbon was the city of Sihon, king of the Amorites, who had fought against the former king of Moab and had taken all his land out of his hand, as far as the Arnon.