Numbers 21:26

23 And Sihon would not suffer Israel to pass through his border: but Sihon collected all his people, and went out against Israel into the wilderness: and he came to Jahaz, and fought against Israel:

24 And Israel smote him with the edge of the sword, and possessed his land from Arnon to Jabbok, even to the children of Ammon: for the border of the children of Ammon [was] strong.

25 And Israel took all these cities: and Israel dwelt in all the cities of the Amorites, in Heshbon, and in all its villages.

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

27 Wherefore they that speak in proverbs say, Come into Heshbon, let the city of Sihon be built and prepared.

28 For there has a fire gone out of Heshbon, a flame from the city of Sihon: it hath consumed Ar of Moab, [and] the lords of the high places of Arnon.

29 Woe to thee, Moab! thou art undone, O people of Chemosh: he hath given his sons that escaped, and his daughters, into captivity to Sihon king of the Amorites.