Numbers 21:30

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

27 That is why the poets say: “Come to Heshbon, let it be rebuilt; let the city of Sihon be restored.

28 For a fire went out from Heshbon, a blaze from the city of Sihon. It consumed Ar of Moab, the rulers of Arnon’s heights.

29 Woe to you, O Moab! You are destroyed, O people of Chemosh! He gave up his sons as refugees, and his daughters into captivity to Sihon king of the Amorites.

30 But we have overthrown them; Heshbon is destroyed as far as Dibon. We demolished them as far as Nophah, which reaches to Medeba.”

31 So Israel lived in the land of the Amorites.

32 After Moses had sent spies to Jazer, Israel captured its villages and drove out the Amorites who were there.

33 Then they turned and went up the road to Bashan, and Og king of Bashan and his whole army came out to meet them in battle at Edrei.

34 But the LORD said to Moses, “Do not fear him, for I have delivered him into your hand, along with all his people and his land. Do to him as you did to Sihon king of the Amorites, who lived in Heshbon.”

Read all of Numbers 21