Deuteronomy 3:16

16 And to the Reubenites and the Gadites I gave the territory from Gilead as far as the Wadi Arnon, with the middle of the wadi as a boundary, and up to the Jabbok, the wadi being boundary of the Ammonites;

Deuteronomy 3:16 Meaning and Commentary

Deuteronomy 3:16

And unto the Reubenites, and unto the Gadites
The tribes of Reuben and Gad:

I gave from Gilead even unto the river Arnon:
see ( Deuteronomy 3:12 )

half the valley and the border;
or rather half the river, the river Arnon; and so it is rendered "the middle of the river", in ( Joshua 12:2 ) and so here the middle of the torrent by the Vulgate Latin and Septuagint versions, and by Onkelos:

even unto the river Jabbok, which is the border of the children of
Ammon;
beyond which the land given to the tribes of Reuben and Gad reached not; see ( Deuteronomy 2:37 ) .

Deuteronomy 3:16 In-Context

14 Jair the Manassite acquired the whole region of Argob as far as the border of the Geshurites and the Maacathites, and he named them—that is, Bashan—after himself, Havvoth-jair, as it is to this day.)

15 To Machir I gave Gilead.

16 And to the Reubenites and the Gadites I gave the territory from Gilead as far as the Wadi Arnon, with the middle of the wadi as a boundary, and up to the Jabbok, the wadi being boundary of the Ammonites;

17 the Arabah also, with the Jordan and its banks, from Chinnereth down to the sea of the Arabah, the Dead Sea, with the lower slopes of Pisgah on the east.

18 At that time, I charged you as follows: "Although the Lord your God has given you this land to occupy, all your troops shall cross over armed as the vanguard of your Israelite kin.