The people of Israel had already conquered and occupied the land east of the Jordan, from the Arnon Valley up the Jordan Valley and as far north as Mount Hermon. They defeated two kings.
Geber son of Uri: the region of Gilead, which had been ruled by King Sihon of the Amorites and King Og of Bashan Besides these twelve, there was one governor over the whole land.
From there they moved again and camped on the north side of the Arnon River, in the wilderness which extends into Amorite territory. (The Arnon was the border between the Moabites and the Amorites.)
But the Israelites killed many of the enemy in battle and occupied their land from the Arnon River north to the Jabbok, that is, to the Ammonites, because the Ammonite border was strongly defended.
So Moses assigned to the tribes of Gad and Reuben and to half the tribe of Manasseh all the territory of King Sihon of the Amorites and King Og of Bashan, including the towns and the country around them.
“After we had passed through Moab, the Lord told us, ‘Now, start out and cross the Arnon River. I am placing in your power Sihon, the Amorite king of Heshbon, along with his land. Attack him, and begin occupying his land.
until they have occupied the land west of the Jordan that the Lord your God has given them. When he has given safety to all the tribes of Israel, then you may come back and settle here in your own land east of the Jordan, which Moses, the Lord's servant, gave to you.”
The territory extended from Mount Halak in the south near Edom, as far as Baalgad in the north, in the valley of Lebanon south of Mount Hermon. Joshua was at war with the kings of this territory for a long time, but he captured them all and put them to death.
He also sent word to the Canaanites on both sides of the Jordan, to the Amorites, the Hittites, the Perizzites, and the Jebusites in the hill country, as well as to the Hivites who lived at the foot of Mount Hermon in the land of Mizpah.
The tribes of Reuben and Gad and the other half of the tribe of Manasseh had already received the land that Moses, the Lord's servant, had given them; it was on the east side of the Jordan River.
Now, as he promised, the Lord your God has given the other Israelites peace. So go back home to the land which you claimed for your own, the land on the east side of the Jordan, that Moses, the Lord's servant, gave you.
Then they went on through the desert, going around the land of Edom and the land of Moab until they came to the east side of Moab, on the other side of the Arnon River. They camped there, but they did not cross the Arnon because it was the boundary of Moab.