28 So Moses gave command concerning them to Eleazar the priest, to Joshua son of Nun, and to the heads of the ancestral houses of the Israelite tribes. 29 And Moses said to them, "If the Gadites and the Reubenites, everyone armed for battle before the Lord, will cross over the Jordan with you and the land shall be subdued before you, then you shall give them the land of Gilead for a possession; 30 but if they will not cross over with you armed, they shall have possessions among you in the land of Canaan." 31 The Gadites and the Reubenites answered, "As the Lord has spoken to your servants, so we will do. 32 We will cross over armed before the Lord into the land of Canaan, but the possession of our inheritance shall remain with us on this side of the Jordan."
Matthew Henry's Commentary on Numbers 32:28-32
Commentary on Numbers 32:28-42
(Read Numbers 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.