Numbers 21:26-30

26For Heshbon was the city of Sihon the king of the Amorites; and he had fought against the former king of Moab, and had taken all his land out of his hand, even unto the Arnon.

27Therefore the poets say, Come to Heshbon; let the city of Sihon be built and established.

28For there went forth fire from Heshbon, a flame from the city of Sihon; It consumed Ar of Moab, the lords of the high places of the Arnon.

29Woe to thee, Moab! thou art undone, people of Chemosh: He gave his sons that had escaped, and his daughters into captivity to Sihon the king of the Amorites.

30And we have shot at them; Heshbon is perished even unto Dibon; and we have laid [them] waste even unto Nophah, which reacheth unto Medeba.