The Campaign. - After the people of Israel had been mustered as the army of Jehovah, and their future relation to the Lord had been firmly established by the order of sacrifice that was given to them immediately afterwards, the Lord commanded Moses to carry out that hostility to the Midianites which had already been commanded in Num 25:16-18. Moses was to revenge (i.e., to execute) the revenge of the children of Israel upon the Midianites, and then to be gathered to his people, i.e., to die, as had already been revealed to him (Num 27:13). "The revenge of the children of Israel" was revenge for the wickedness which the tribes of the Midianites who dwelt on the east of Moab (see at Num 22:4) had practised upon the Israelites, by seducing them to the idolatrous worship of Baal Peor. This revenge is called the "revenge of Jehovah" in Num 31:3, because the seduction had violated the divinity and honour of Jehovah. The daughters of Moab had also taken part in the seduction (Num 25:1-2); but they had done so at the instigation of the Midianites, and not of their own accord, and therefore the Midianites only were to atone for the wickedness.