Reuben, Gad, and Half of Manasseh Settle East of the Jordan

12 And this land we took in possession at that time. From Aroer, which is by the river Arnon, and the half of mount Gilead, and its cities, I gave to the Reubenites and to the Gadites; 13 and the rest of Gilead, and all Bashan, the kingdom of Og, I gave to half the tribe of Manasseh. (The whole region of Argob, even all Bashan, is called a land of giants. 14 Jair the son of Manasseh took the whole region of Argob as far as the border of the Geshurites and Maachathites, and called Bashan after his own name, Havoth-Jair, to this day.) 15 And I gave Gilead to Machir. 16 And to the Reubenites and to the Gadites I gave from Gilead even to the river Arnon, the middle of the ravine and its border, as far as the river Jabbok, the border of the children of Ammon; 17 the plain also, and the Jordan, and [its] border from Chinnereth as far as the sea of the plain, the salt sea, under the slopes of Pisgah eastward. 18 And I commanded you at that time, saying, Jehovah your God hath given you this land to take possession of it: ye shall pass over armed before your brethren the children of Israel, all [who are] combatants. 19 Only your wives, and your little ones, and your cattle,—I know that ye have much cattle,—shall abide in your cities which I have given you, 20 until Jehovah give rest to your brethren, as well as to you, and they also take possession of the land that Jehovah your God giveth them beyond the Jordan; then shall ye return, each man to his possession, which I have given you.

Matthew Henry's Commentary on Deuteronomy 3:12-20

Commentary on Deuteronomy 3:12-20

(Read Deuteronomy 3:12-20)

This country was settled on the Reubenites, Gadites, and half the tribe of Manasseh: see Numbers 32. Moses repeats the condition of the grant to which they agreed. When at rest, we should desire to see our brethren at rest too, and should be ready to do what we can towards it; for we are not born for ourselves, but are members one of another.