Or HaChaim on Numbers 31:3/אור החיים על במדבר ל״א:ג׳

1 וידבר משה…החלצו מאתכם, Moses said.. "mobilise from amongst you, etc." The word לאמור in this verse is puzzling. To whom were the people supposed to relay what Moses told them? Furthermore, why did Moses use the expression החלצו instead of the formulation Moses used in Exodus 17,9 when he said to Joshua: בחר לנו אנשים, "choose some men for us, etc.?" Why did he not order Pinchas to do what he had ordered Joshua to do at that time instead of addressing his command to the people at large? Another peculiarity in this verse are the words ויהיו על מדין "so that they will be against Midian." Moses should have said: "so that they will do battle against Midian." Moreover, why did Moses change G'd's instructions? G'd had told Moses נקם נקמת בני ישראל, "avenge the vengeance of the Israelites," whereas Moses told the people to exact "G'd's vengeance," i.e. לתת נקמת השם? Besides, why did Moses not send a large army but selected only 1.000 men per tribe? Who had given him authority to send such a small force of soldiers against a numerically far superior people [governed by 5 kings Ed.]? When you consider that 32.000 girls who were still virgins were left you can arrive at some idea how many there must have been originally.

2However, as we already mentioned in our introduction, this expedition was based on the attackers' moral superiority over its adversaries as evidenced by G'd's instruction to "avenge." Moses had to mobilise the kind of soldiers whose fantasies had not run wild at the time of the debacle in Shittim. How was he to know which one of the Israelites had indulged in sinful thoughts at the time? Moses therefore advised each man of military age to examine himself in this matter. This is the meaning of החלצו מאתכם, "separate yourselves from your own selves," i.e. examine your conscience if you are morally fit to take part in such a punitive expedition of the morally superior against the morally inferior. Only those who knew that they could qualify under this heading would be considered for the contingent of 1.000 per tribe. The word לאמור is a hint that these people should all "speak to their inner selves on this subject." Perhaps the very word לאמור was even an allusion to the sin of גלוי עריות as we find in Sanhedrin 56 "the word לאמור refers to illicit sex." According to Midrash Tanchuma on our verse these men were all righteous. Although we have explained elsewhere that one can only derive such a conclusion from the word אנשים when this word is superfluous in the text, in our instance there is independent support for the theory that the אנשים mentioned here had to be righteous men. Seeing this was so they had no reason to worry although they would be far outnumbered by the Midianites. Moreover, they were not only righteous but they qualified for the appellation חסידים, "pious," because they had been confronted with a powerful temptation and had conquered it. Zohar Chadash volume 3 page 195 states that this is the basis for someone being described as pious. This then explains Moses' considerations as to whom to select and how many to select.

3ויהיו על מדין, "and they will be against Midian." We can best explain this expression by reverting to a statement of the Kabbalists that sanctity is the mystical foundation of spiritual ascent, whereas the קליפה, the source of negative spiritual forces are the mystical foundation of spiritual descent of a human being. Once a person commits a sin, part of the קליפה, attaches itself to him and becomes part of his nature causing him to become degraded. We have explained this already at the beginning of Parshat Ki Tissa in connection with Exodus 30,12 (my translation page 814). The words על מדין then mean that these pious soldiers should be able to be "above Midian," i.e. be spiritually superior. None of the forces of impurity which cling to the Midianites would cling to these soldiers.

4לתת נקמת השם, "to execute G'd's vengeance." This too was part of Moses' astuteness, his endeavour to achieve the objective of avenging the sin the Midianites had caused the Jewish people to commit. Moses commanded these soldiers that their motivation should be to avenge a wrong done to G'd whose commandments the Midianites had caused the Jewish people to violate and neglect. Their vengeance should not focus on the fact that the Midianites had caused the death of so many Israelites. If that were to be their motivation in going to war against the Midianites this would not be a מצוה which would help them succeed in this campaign without sustaining casualties. It is true that G'd Himself had told Moses that the Israelites were to avenge what the Midianites had done to them. However, the Torah does not say that G'd told Moses to convey this thought to the Israelites. In G'd's conversation with Moses He left it to Moses to figure out the best way to achieve the result G'd had in mind.

5Our verse may also be understood thus: There would be no need for these soldiers to actually fight a battle; all they had to do was to be there physically. G'd would do the fighting on their behalf. The reason was לתת נקמת השם, it was to be a vengeance which G'd exacted from Midian. The situation was similar to Exodus 14,14 when Moses told the people not to worry, but that G'd would fight the Egyptians on their behalf.

6וימסרו מאלפי ישראל אלף למטה, One thousand men per tribe were handed over from amongst the many thousands of Israelites, etc. This means that everyone who was certain that he fulfilled the qualifications needed volunteered to be part of the thousand men from his tribe. Once the number 1.000 in that tribe had been reached no further volunteers were asked for. Moses deliberately limited the number in each tribe to one thousand so as not to create a situation which would be embarassing, such as when one tribe would field many more volunteers than another.