Numbers 25:16 And the Lord spake unto Moses, saying, 17 Vex the Midianites, and smite them: 18 For they vex you with their wiles, wherewith they have beguiled you in the matter of Peor, and in the matter of Cozbi, the daughter of a prince of Midian, their sister, which was slain in the day of the plague for Peor's sake.
[Patriarchs & Prophets pp 456] The judgments visited upon Israel for their sin at Shittim, destroyed the survivors of that vast company, who, nearly forty years before, had incurred the sentence, “They shall surely die in the wilderness.” The numbering of the people by divine direction, during their encampment on the plains of Jordan, showed that “of them whom Moses and Aaron the priest numbered, when they numbered the children of Israel in the wilderness of Sinai, ... there was not left a man of them, save Caleb the son of Jephunneh, and Joshua the son of Nun.” Numbers 26:64, 65.
God had sent judgments upon Israel for yielding to the enticements of the Midianites; but the tempters were not to escape the wrath of divine justice. The Amalekites, who had attacked Israel at Rephidim, falling upon those who were faint and weary behind the host, were not punished till long after; but the Midianites who seduced them into sin were speedily made to feel God's judgments, as being the more dangerous enemies. “Avenge the children of Israel of the Midianites” (Numbers 31:2), was the command of God to Moses; “afterward shalt thou be gathered unto thy people.”
This mandate was immediately obeyed. One thousand men were chosen from each of the tribes and sent out under the leadership of Phinehas. “And they warred against the Midianites, as the Lord commanded Moses.... And they slew the kings of Midian, beside the rest of them that were slain; ... five kings of Midian: Balaam also the son of Beor they slew with the sword.” Verses 7, 8. The women also, who had been made captives by the attacking army, were put to death at the command of Moses, as the most guilty and most dangerous of the foes of Israel.
Joshua 13:22 Balaam also the son of Beor, the soothsayer, did the children of Israel slay with the sword among them that were slain by them.
May God add His blessing to the study of His word. "Good night" and God bless!