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 Num 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 Num 31:5 and Num 31:16, appears to be used in the sense of giving, delivering, and then, like נתן, doing, making, effecting. On the fact itself, see Num 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 (Num 25:2), to preserve the congregation from all contamination from that abominable idolatry.
verses 19-20
Num 31:19-20 Purification of the Warriors, the Prisoners, and the Booty. - Moses commanded the men of war to remain for seven days outside the camp of the congregation, to carry out upon the third and seventh day the legal purification of such persons and things as had been rendered unclean through contact with dead bodies. Every one who had slain a soul (person), or touched one who had been slain, was to be purified, whether he were a warrior or a prisoner. And so also were all the clothes, articles of leather, materials of goats' hair, and all wooden things.
verses 21-24
To this end Eleazar, whose duty it was as high priest to see that the laws of purification were properly observed, issued fuller instructions with reference to the purification of the different articles, in accordance with the law in ch. 19. למּלחמה הבּאים, those who came to the war, i.e., who went into the battle (see at Num 10:9). “The ordinance of the law:” as in Num 19:2. The metal (gold, silver, copper, tin, lead), all that usually comes into the fire, i.e., that will bear the fire, was to be drawn through the fire, that it might become clean, and was then to be sprinkled with water of purification (Num 19:9); but everything that would not bear the fire was to be drawn through water. - The washing of clothes
