John Gills Exposition of the Bible Commentary - Numbers 31:2
Avenge the children of Israel of the Midianites ,.... For the injury they had done them, by sending their daughters among them, who enticed them to commit uncleanness with them, and then drew them into the worship of their idols, which brought the wrath of God upon them, and for which 24,000 persons were slain. Now, though the Moabites had a concern in this affair as well as the Midianites, yet they were spared; which some think was for the sake of Lot, from whom they descended; but why not... read more
Matthew Henry's Complete Commentary - Numbers 31:1-6
Here, I. The Lord of hosts gives orders to Moses to make war upon the Midianites, and his commission no doubt justified this war, though it will not serve to justify the like without such commission. The Midianites were the posterity of Abraham by Keturah, Gen. 25:2. Some of them settled south of Canaan, among whom Jethro lived, and they retained the worship of the true God; but these were settled east of Canaan, and had fallen into idolatry, neighbours to, and in confederacy with, the... read more