Numbers 21:27-29 NIV

27 That is why the poets say: "Come to Heshbon and let it be rebuilt; let Sihon's city be restored.
28 "Fire went out from Heshbon, a blaze from the city of Sihon.1 It consumed2 Ar3 of Moab, the citizens of Arnon's heights.4

References for Numbers 21:28

29 Woe to you, O Moab!5 You are destroyed, O people of Chemosh!6 He has given up his sons as fugitives7 and his daughters as captives8 to Sihon king of the Amorites.