Devarim 3:16

16 And unto the Reuveni and unto the Gadi I gave from Gil`ad even unto the Wadi Arnon with the middle of the valley as the border even unto the Wadi Yabok, which is the border of the Bnei Amon;

Devarim 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 ) .

Devarim 3:16 In-Context

14 Yair ben Menasheh took all the region of Argov unto the border of Geshuri and Maachati, and called them after shmo (his own name), HaBashan Havot Yair, unto hayom hazeh.

15 And I gave Gil‘ad unto Machir.

16 And unto the Reuveni and unto the Gadi I gave from Gil`ad even unto the Wadi Arnon with the middle of the valley as the border even unto the Wadi Yabok, which is the border of the Bnei Amon;

17 The Aravah also, and Yarden, and the coast thereof, from Kinneret even unto the yam of the Aravah, even the Dead Sea, under the slopes of Pisgah to the east.

18 And I commanded you at that time, saying, Hashem Eloheichem hath given you this land to possess it; ye shall pass over armed before your brethren the Bnei Yisroel, all bnei chayil (valiant men, men fit for military service).