They captured his land and made it their own. They also took the land of Og, the king of Bashan. Sihon and Og were the two Amorite kings east of the Jordan River.
“You gave them kingdoms and nations. You even gave them lands far away. They took over the country of Sihon. He was the king of Heshbon. They also took over the country of Og. He was the king of Bashan.
They had already won the battle over Sihon. Sihon was the king of the Amorites. He had ruled in Heshbon. Israel had also won the battle over Og at Edrei. Og was the king of Bashan. He had ruled in Ashtaroth.
I sent hornets ahead of you. They drove your enemies out to make room for you. That included the two Amorite kings. You did not do that with your own swords and bows.