Deuteronomy 3:16

16 But I gave to the tribes of Reuben and Gad the territory that reaches from Gilead down to the Arnon River valley. It reaches all the way to the Jabbok River. The Jabbok is the northern border of Ammon. The middle of the Arnon River valley is its southern border.

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 took the whole area of Argob. He was from the family line of Manasseh. Argob goes all the way to the border of the people of Geshur and Maacah. It was named after Jair. So Bashan is called Havvoth Jair to this very day.

15 I gave Gilead to Makir.

16 But I gave to the tribes of Reuben and Gad the territory that reaches from Gilead down to the Arnon River valley. It reaches all the way to the Jabbok River. The Jabbok is the northern border of Ammon. The middle of the Arnon River valley is its southern border.

17 The western border of Reuben and Gad is the Jordan River in the Arabah Valley. It reaches from the Sea of Galilee to the Dead Sea. It runs below the slopes of Pisgah.

18 Here is the command I gave at that time to the tribes of Reuben and Gad and half of the tribe of Manasseh. I said, "The LORD your God has given you this land as your very own. But all of your strong men must be prepared for battle. They must cross over ahead of the rest of your fellow Israelites.