Numbers 21:29

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 the Arnon.

Therefore those who speak in proverbs say,

“Come to Heshbon.

Let the city of Sihon be built and established;

for a fire has gone out of Heshbon,

a flame from the city of Sihon.

It has devoured Ar of Moab,

The lords of the high places of the Arnon.

We have shot at them.

Heshbon has perished even to Dibon.

We have laid waste even to Nophah,

Which reaches to Medeba.”

Thus Israel lived in the land of the Amorites.

Moses sent to spy out Jazer. They took its villages, and drove out the Amorites who were there.