13 Moses, and Eleazar the priest, and all the princes of the congregation, went forth to meet them outside of the camp.
*Minor differences ignored. Grouped by changes, with first version listed as example.
And Moses and Eleazar the priest, and all the princes of the congregation,.... Attended, no doubt, with a proper retinue:
went forth to meet them without the camp; partly to do honour to them, and to congratulate them on their victory, and partly to hinder them going into the camp directly, until they were purified; see Genesis 14:17.
The sword of war should spare women and children; but the sword of justice should know no distinction, but that of guilty or not guilty. This war was the execution of a righteous sentence upon a guilty nation, in which the women were the worst criminals. The female children were spared, who, being brought up among the Israelites, would not tempt them to idolatry. The whole history shows the hatefulness of sin, and the guilt of tempting others; it teaches us to avoid all occasions of evil, and to give no quarter to inward lusts. The women and children were not kept for sinful purposes, but for slaves, a custom every where practised in former times, as to captives. In the course of providence, when famine and plagues visit a nation for sin, children suffer in the common calamity. In this case parents are punished in their children; and for children dying before actual sin, full provision is made as to their eternal happiness, by the mercy of God in Christ.
Moses, and Eleazar the priest, . . . went forth to meet them without the camp--partly as a token of respect and congratulation on their victory, partly to see how they had executed the Lord's commands, and partly to prevent the defilement of the camp by the entrance of warriors stained with blood.
Treatment of the Prisoners. - When Moses went out to the front of the camp with Eleazar and the princes of the congregation to meet the returning warriors, he was angry with the commanders, because they had left all the women alive, since it was they who had been the cause, at Balaam's instigation, of the falling away of the Israelites from Jehovah to worship Peor; and he commanded all the male children to be slain, and every woman who had lain with a man, and only the young girls who had hitherto had no connection with a man to be left alive. החיל פּקוּדי, lit., the appointed persons, i.e., the officers of the army, who were then divided into princes (captains) over thousands and hundreds. - "Which came from the battle," i.e., who had returned. The question in Numbers 31:15, "Have ye left all the women alive?" is an expression of dissatisfaction, and reproof for their having done this. למסר־מעל...היוּ, "they have become to the Israelites to work unfaithfulness towards Jehovah," i.e., they have induced them to commit an act of unfaithfulness towards Jehovah. The word מסר, which only occurs in this chapter, viz., in Numbers 31:5 and Numbers 31:16, appears to be used in the sense of giving, delivering, and then, like נתן, doing, making, effecting. On the fact itself, see Numbers 25:6. The object of the command to put all the male children to death, was to exterminate the whole nation, as it could not be perpetuated in the women. Of the female sex, all were to be put to death who had known the lying with a man, and therefore might possibly have been engaged in the licentious worship of Peor (Numbers 25:2), to preserve the congregation from all contamination from that abominable idolatry.
Without the camp - Partly to put respect upon them, and congratulate with them for their happy success; and partly to prevent the pollution of the camp by the untimely entrance of the warriors into it.
*More commentary available at chapter level.