Observe here, 1. That Moses did not number the people but when God commanded him. David in his time did it without a command, and paid dearly for it. God was Israel's king, and he would not have this act of authority done but by his express orders. Moses, perhaps, by this time, had heard of the blessing with which Balaam was constrained, sorely against his will, to bless Israel, and particularly the notice he took of their numbers; and he was sufficiently pleased with that general testimony borne to this instance of their strength and honour by an adversary, though he knew not their numbers exactly, till God now appointed him to take the sum of them. 2. Eleazar was joined in commission with him, as Aaron had been before, by which God honoured Eleazar before the elders of his people, and confirmed his succession. 3. It was presently after the plague that this account was ordered to be taken, to show that though God had in justice contended with them by that sweeping pestilence, yet he had not made a full end, nor would he utterly cast them off. God's Israel shall not be ruined, though it be severely rebuked. 4. They were now to go by the same rule that they had gone by in the former numbering, counting those only that were able to go forth to war, for this was the service now before them.

Take the sum of all the congregation of the children of Israel,.... Excepting the Levites, who were to be numbered by themselves, and at a different age; this sum was to be taken, that it might appear that all of the old generation that came out of Egypt, of the age at which this sum was taken, were now dead, excepting two, as the Lord had threatened; and partly that as they were now about to enter the land of Canaan, it might be divided to them according to their number; as well as to show the faithfulness of God to his word and promise, that he would multiply and make them fruitful, notwithstanding all their provoking sins and transgressions:

from twenty years old and upwards, throughout their father's house; all of that age in every tribe, house, and family:

all that are able to go to war in Israel; for which they must prepare, being about to enter the land of Canaan, and dispossess and drive out the inhabitants of it.

Take the sum of all the congregation--The design of this new census, after a lapse of thirty-eight years, was primarily to establish the vast multiplication of the posterity of Abraham in spite of the severe judgments inflicted upon them; secondarily, it was to preserve the distinction of families and to make arrangements, preparatory to an entrance into the promised land, for the distribution of the country according to the relative population of the tribes.