And, behold, ye are risen up in your fathers' stead,.... Succeeded them in their families, of which they were now the heads; and in their substance, their flocks, and herds; and he suggests also, in their manners amid evil dispositions:

an increase of sinful men; this new generation was greatly increased, for when the number was taken, as it was but a little before this time, they were pretty near the same number as of those that came out of Egypt; but then they were not only an increase of men, but of sinful men, like fathers like sons:

to augment yet the fierce anger of the Lord toward Israel; to make it greater and fiercer towards that nation than even their fathers had by their many sins and transgressions.

Moses said unto the children of Gad and to the children of Reuben, Shall your brethren go to war, and shall ye sit here--Their language was ambiguous; and Moses, suspicious that this proposal was an act of unbelief, a scheme of self-policy and indolence to escape the perils of warfare and live in ease and safety, addressed to them a reproachful and passionate remonstrance. Whether they had really meditated such a withdrawal from all share in the war of invasion, or the effect of their leader's expostulation was to drive them from their original purpose, they now, in answer to his impressive appeal, declared it to be their sincere intention to co-operate with their brethren; but, if so, they ought to have been more explicit at first.