I beg the Reader to observe the words of Moses in this verse. In the former verse the LORD had said that the children of Israel should avenge themselves of the Midianites. But Moses varies the precept, and here saith, that the LORD is to be avenged of them. And what doth this teach us but this, that the interests of GOD and his people are one and the same. I remember in the moment I am looking over this scripture thy sweet words, blessed JESUS, in which thou hast left upon record, that whatsoever is done in a way of kindness to one of the least of thy brethren, thou takest as done to thyself. Matthew 25:40; John 17:21-23.
Related Commentaries of Numbers 31:3
Numbers 31:3
3 And Moses spake unto the people, saying, Arm some of yourselves unto the war, and let them go against the Midianites, and avenge the LORD of Midian.