18. Then they went on through the desert, going round the land of Edom and the land of Moab until they came to the east side of Moab, on the other side of the River Arnon. They made camp there, but they did not cross the Arnon because it was the boundary of Moab.
19. Then the Israelites sent messengers to Sihon, the Amorite king of Heshbon, and asked him for permission to go through his country to their own land.
20. But Sihon would not let Israel do it. He brought his whole army together, made camp at Jahaz, and attacked Israel.