Deuteronomy 3:8

8 And we took in that time the land from the hand of the two kings of Amorites, that were beyond (the) Jordan, from the strand of Arnon unto the hill of Hermon, (And so at that time we took from the hands of the two kings of the Amorites, all the land which was east of the Jordan River, from the Arnon River unto Mount Hermon,)

Deuteronomy 3:8 Meaning and Commentary

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 Psalms 133:3).

Deuteronomy 3:8 In-Context

6 And we did away those men, as we did to Sihon, king of Heshbon; and we destroyed each city of that land, and the men, and the women, and (the) little children;

7 and we took by prey beasts, and spoils of the cities. (and for prey, we took beasts, and spoils, from all the cities.)

8 And we took in that time the land from the hand of the two kings of Amorites, that were beyond (the) Jordan, from the strand of Arnon unto the hill of Hermon, (And so at that time we took from the hands of the two kings of the Amorites, all the land which was east of the Jordan River, from the Arnon River unto Mount Hermon,)

9 which hill Sidonians call Sirion, and Amorites call Shenir. (which mountain the Sidonians call Mount Sirion, and the Amorites call Mount Shenir.)

10 And we took all the cities that were set in the plain, and all the land of Gilead, and of Bashan, unto Salchah and Edrei, cities of the realm of Og, in Bashan. (And we took all the cities that were set there on the plain, and all the land of Gilead, and of Bashan, unto Salchah and Edrei, cities in the kingdom of Og, in Bashan.)