You can see that the armies of Ammon, Moab, and Edom are attacking us! Those are the nations you would not let our ancestors invade on their way from Egypt, so these nations were not destroyed.
But Sihon refused to let Israel travel through his land. Instead, he called together his entire army and marched into the desert to attack Israel near the town of Jahaz.
The Israelites had to go around the territory of Edom, so when they left Mount Hor, they headed south towards the Red Sea. But along the way, the people became so impatient
They sent messengers to the king of Edom and said, “Please, let us go through your country.” But the king of Edom refused. They also sent messengers to the king of Moab, but he wouldn't let them cross his country either. And so the Israelites stayed at Kadesh.
A little later, the Israelites set out into the desert, going east of Edom and Moab, and camping on the eastern side of the gorge of the River Arnon. The Arnon is the eastern border of Moab, and since the Israelites didn't cross it, they didn't even set foot in Moab.
If Chemosh your god takes over a country and gives it to you, don't you have a right to it? And if the LORD takes over a country and gives it to us, the land is ours!