Deuteronomy 3:8

And we took at that time out of the hands of the two kings of the Amorites ,.... Sihon king of Heshbon, and Og king of Bashan:

the land that was on this side Jordan ; where Moses then was, being in the plains of Moab, and was the country beyond Jordan, with respect to the land of Canaan, and when in that:

from the river of Arnon unto Mount Hermon ; Arnon was a river which divided Moab and the Amorites, Numbers 22:13 and Hermon was a mountain of Gilead, which ended where Lebanon began, and was the northerly border of this country. It was remarkable for the dew that fell on it; See Gill on Psalm 133:3 .