Thematic Bible: Sihon conquered

But Sihon would not let Israel travel through his territory. Instead, he gathered his whole army and went out to confront Israel in the wilderness. When he came to Jahaz, he fought against Israel. Israel struck him with the sword and took possession of his land from the Arnon to the Jabbok, [but only up] to the Ammonite border, because it was fortified. Israel took all the cities and lived in all these Amorite cities, including Heshbon and all its villages. read more.
Heshbon was the city of Sihon king of the Amorites, who had fought against the former king of Moab and had taken control of all his land as far as the Arnon. Therefore the poets say: Come to Heshbon, let it be rebuilt; let the city of Sihon be restored. For fire came out of Heshbon, a flame from the city of Sihon. It consumed Ar of Moab, the lords of Arnon's heights. Woe to you, Moab! You have been destroyed, people of Chemosh! He gave up his sons as refugees, and his daughters into captivity to Sihon the Amorite king. We threw them down; Heshbon has been destroyed as far as Dibon. We caused desolation as far as Nophah, which reaches as far as Medeba. So Israel lived in the Amorites' land. After Moses sent spies to Jazer, Israel captured its villages and drove out the Amorites who were there.

So Sihon and his whole army came out against us for battle at Jahaz. The Lord our God handed him over to us, and we defeated him, his sons, and his whole army. At that time we captured all his cities and completely destroyed the people of every city, including the women and children. We left no survivors. read more.
We took only the livestock and the spoil from the cities we captured as plunder for ourselves. There was no city that was inaccessible to us, from Aroer on the rim of the Arnon Valley, along with the city in the valley, even as far as Gilead. The Lord our God gave everything to us.