And unto the Reubenites and unto the Gadites I gave. — The circumstances are detailed in Numbers 32. They desired the land for their cattle.
Related Commentaries of Deuteronomy 3:16
Deuteronomy 3:16-17
16 And unto the Reubenites and unto the Gadites I gave from Gilead even unto the river Arnon half the valley, and the border even unto the river Jabbok, which is the border of the children of Ammon;
17 The plain also, and Jordan, and the coast thereof, from Chinnereth even unto the sea of the plain, even the salt sea, under Ashdothpisgaha eastward.