So concerning them Moses commanded,.... That they should have a grant of the land they requested: this looks as if Moses determined the case himself, though perhaps it was by the vote, and with the consent of the whole court; only Moses strictly enjoined them to observe it, namely:

Eleazar the priest, and Joshua the son of Nun, and the chief fathers of the tribes of the children of Israel; and the rather he did this, because he knew that he should die, and not see either the thing itself or the conditions of it performed.

Moses thereupon commanded Eleazar, Joshua, and the heads of the tribes of Israel, i.e., the persons entrusted in Numbers 34:17. with the division of the land of Canaan, to give the Gadites and Reubenites the land of Gilead for a possession, after the conquest of Canaan, if they should go along with them across the Jordan equipped for battle. But if they should not do this, they were to be made possessors (i.e., to be settled; נאחז in a passive sense, whereas in Genesis 34:10; Genesis 47:27, it is reflective, to fix oneself firmly, to settle) in the land of Canaan along with the other tribes. In the latter case, therefore, they were not only to receive no possession in the land to the east of the Jordan, but were to be compelled to go over the Jordan with their wives and children, and to receive an inheritance there for the purpose of preventing a schism of the nation.

So concerning them Moses {k} commanded Eleazar the priest, and Joshua the son of Nun, and the chief fathers of the tribes of the children of Israel:

(k) Moses gave charge that his promise made to the Reubenites, and other, would be performed after his death so that they would not break theirs.

28-32. concerning them Moses commanded-The arrangement itself, as well as the express terms on which he assented to it, was announced by the leader to the public authorities. The pastoral country the two tribes had desired was to be granted them on condition that they would lend their aid to their brethren in the approaching invasion of Canaan. If they refused or failed to perform their promise, those possessions should be forfeited, and they themselves compelled to go across the Jordan and fight for a settlement like the rest of their brethren.

32:28-42 Concerning the settlement of these tribes, observe, that they built the cities, that is, repaired them. They changed the names of them; probably they were idolatrous, therefore they should be forgotten. A spirit of selfishness, of seeking our own, not the things of Christ, when each one ought to assist others, is as dangerous as it is common. It is impossible to be sincere in the faith, sensible of the goodness of God, constrained by the love of Christ, sanctified by the power of the Holy Ghost, and yet be indifferent to the progress of religion, and the spiritual success of others, through love of ease, or fear of conflict. Let then your light so shine before men, that they may see your good works, and glorify your Father which is in heaven.