These words are both a prayer and a prophecy. Edom is the seed of Esau, and as such there was, and is, and ever will be, the same hatred subsisting. But the Church looketh forward to the hour, when Edom shall be ruined; Babylon must fall; Israel shall be delivered. And as these events were typical of the Gospel Church in after ages; so the Babylon spoken of in the New Testament shall be destroyed. Revelation 18:2-10.
Related Commentaries of Psalms 137:7
Psalms 137:7-9
7 Remember, O LORD, the children of Edom in the day of Jerusalem; who said, Rase it, rase it, even to the foundation thereof.
8 O daughter of Babylon, who art to be destroyed;d happy shall he be, that rewardeth thee as thou hast served us.
9 Happy shall he be, that taketh and dasheth thy little ones against the stones.e