Numbers 21:23-30

But Sihon would not allow Israel to pass through his territory. So Sihon gathered all his people together and went out against Israel in the wilderness, and he came to Jahaz and fought against Israel. Then Israel defeated him with the edge of the sword, and took possession of his land from the Arnon to the Jabbok, as far as the people of Ammon; for the border of the people of Ammon was fortified. So Israel took all these cities, and Israel dwelt in all the cities of the Amorites, in Heshbon and in all its villages. For 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 from his hand as far as the Arnon. Therefore those who speak in proverbs say: “Come to Heshbon, let it be built; Let the city of Sihon be repaired. “For fire went out from Heshbon, A flame from the city of Sihon; It consumed Ar of Moab, The lords of the heights of the Arnon. Woe to you, Moab! You have perished, O people of Chemosh! He has given his sons as fugitives, And his daughters into captivity, To Sihon king of the Amorites. “But we have shot at them; Heshbon has perished as far as Dibon. Then we laid waste as far as Nophah, Which reaches to Medeba.”