And they slew the kings of Midian, beside the rest of them that were slain,.... Besides the males of the common people, they slew their kings, who were petty kings or princes, perhaps under the king of Moab, or had reassumed their titles and government after the death of Sihon the king of the Amorites, who, in his time, were called dukes of Sihon, Jos 13:21, namely:

Evi, and Rekem, and Zur, and Hur, and Reba, five kings of Midian; the Targum of Jonathan says of Zur, this is Balak, which is not probable; it is more likely, what Aben Ezra observes, that he was the father of Cosbi, whom Phinehas slew, Num 25:15.

Balaam also, the son of Beor, they slew with the sword; so that he died not a natural death, but a violent one, not such an one as he desired, the death of the righteous, but of bloody and deceitful men, who do not live out half their days; for if the Jewish writers (c) are to be credited, he was but thirty four years of age when he was slain, which is not quite half the age of man, that being seventy, Psa 90:10, it appears by this that he was among the Midianites at the time of this war; either he stayed here till this time, when he went from Balak with an intention to go into his own country; or he had returned hither, being either sent for, by the princes of Midian, on this occasion; or, as some say, as Aben Ezra observes, that he came to Midian after he returned to his place, on hearing the plague that came upon Israel through his counsel, to receive the money of the elders of Midian for it; and so Chaskuni.

(c) Shalshalet Hakabala, fol. 7. 2.

the kings of Midian--so called, because each was possessed of absolute power within his own city or district; called also dukes or princes of Sihon (Jos 13:21), having been probably subject to that Amorite ruler, as it is not uncommon in the East to find a number of governors or pachas tributary to one great king.

Zur--father of Cozbi (Num 25:15).

Balaam also . . . they slew with the sword--This unprincipled man, on his dismissal from Balak, set out for his home in Mesopotamia (Num 24:25). But, either diverging from his way to tamper with the Midianites, he remained among them without proceeding farther, to incite them against Israel and to watch the effects of his wicked counsel; or, learning in his own country that the Israelites had fallen into the snare which he had laid and which he doubted not would lead to their ruin, he had, under the impulse of insatiable greed, returned to demand his reward from the Midianites. He was an object of merited vengeance. In the immense slaughter of the Midianitish people--in the capture of their women, children, and property and in the destruction of all their places of refuge--the severity of a righteous God fell heavily on that base and corrupt race. But, more than all others, Balaam deserved and got the just reward of his deeds. His conduct had been atrociously sinful, considering the knowledge he possessed, and the revelations he had received, of the will of God. For any one in his circumstances to attempt defeating the prophecies he had himself been the organ of uttering, and plotting to deprive the chosen people of the divine favor and protection, was an act of desperate wickedness, which no language can adequately characterize.