Numbers 21:10-15

The People of Israel set out and camped at Oboth. They left Oboth and camped at Iye Abarim in the wilderness that faces Moab on the east. They went from there and pitched camp in the Zered Valley. Their next camp was alongside the Arnon River, which marks the border between Amorite country and Moab. The Book of the Wars of GOD refers to this place: Waheb in Suphah, the canyons of Arnon; Along the canyon ravines that lead to the village Ar And lean hard against the border of Moab.