Deuteronomy 3:16

16 and to the Reubenites and Gadites I gave the territory from Gilead to the Arnon Valley (the middle of the valley was the border) and up to the Jabbok River, the border 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, a descendant of Manasseh, took the whole region of Argob as far as the border of the Geshurites and Maacathites. He renamed Bashan after himself, Havvoth-jair, by which it is called to this day.

15 To Machir I gave Gilead,

16 and to the Reubenites and Gadites I gave the territory from Gilead to the Arnon Valley (the middle of the valley was the border) and up to the Jabbok River, the border of the Ammonites.

17 The Jordan River in the Arabah bordered it from Chinnereth to the Sea of the Arabah (the Salt Sea ) with the slopes of Pisgah to the east.

18 At that time I commanded you: “The LORD your God has given you this land to possess. All your men of valor are to cross over, armed for battle, ahead of your brothers, the Israelites.