Numbers 21:24-35
24 Israel, however, put him to the sword and took over his land from the Arnon to the Jabbok, but only as far as the Ammonites, because their border was fortified.
25 Israel captured all the cities of the Amorites and occupied them, including Heshbon and all its surrounding settlements.
26 Heshbon was the city of Sihon king of the Amorites, who had fought against the former king of Moab and had taken from him all his land as far as the Arnon.
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.
It consumed Ar of Moab,
the citizens of Arnon’s heights.
29
Woe to you, O Moab!
You are destroyed, O people of Chemosh!
He has given up his sons as fugitives
and his daughters as captives
to Sihon king of the Amorites.
30
“But we have overthrown them;
Heshbon is destroyed all the way to Dibon.
We have demolished them as far as Nophah,
which extends to Medeba.”
31 So Israel settled in the land of the Amorites.
32 After Moses had sent spies to Jazer, the Israelites captured its surrounding settlements and drove out the Amorites who were there.
33 Then they turned and went up along the road toward Bashan, and Og king of Bashan and his whole army marched out to meet them in battle at Edrei.
34 The Lord said to Moses, “Do not be afraid of him, for I have handed him over to you, with his whole army and his land. Do to him what you did to Sihon king of the Amorites, who reigned in Heshbon.”
35 So they struck him down, together with his sons and his whole army, leaving them no survivors. And they took possession of his land.