Albert Barnes Commentary Psalms 137:7

"Remember, O Jehovah, against the children of Edom The day of Jerusalem; Who said, Rase it, rase it, Even to the foundation thereof." — Psalms 137:7 (ASV)

Remember, O Lord, the children of Edom - The Edomites; the people of Idumea. On the situation of Edom or Idumea, see introductory notes to Isaiah 34:0.

In the day of Jerusalem - In the day when Jerusalem will be restored, in the day when punishment will be inflicted on the nations that destroyed it, then do not forget the Edomites, who played such a large and active part in its overthrow. This is to be understood as a continued remembrance of Zion, as a purpose not to forget Jerusalem. The psalmist, representing the feelings of the captives in Babylon, says that far from doing anything that would imply a forgetfulness of their native land—as singing cheerful songs there might be understood to be—they would do everything to call Jerusalem to remembrance.

They would remember her former splendor; they would remember her desolations. They would go further—they would not forget those who had brought these calamities upon her, those who had done most for her overthrow. Among the most prominent, they would remember particularly the ancient enemies of their nation—the Edomites—who had been among the most active in its destruction and who had united with the Babylonians in the work of ruin. They would remember all this, and they prayed that God also would remember the desolation itself and all the actors in that work of desolation.

Who said - This implies that they had been associated with the Babylonians in the destruction of the city. For information on the hostility of that people to the Hebrews, the grounds for their hostility, their agency in uniting with the Babylonians to destroy Jerusalem, and the divine vengeance threatened against them on that account, see, as above, the introduction to Isaiah 34:0.

Rase it, rase it - Margin, as in Hebrew, make bare. That is, strip it of everything—temple, houses, ornaments, fountains—and leave it a bare and naked rock. Let nothing remain but the rocks—the foundations—on which it is built. In the history of the Edomites, as stated in the introduction to Isaiah 34:0, there were abundant facts to show that they were particularly zealous and active in seeking the destruction of the hated city. This verse and the one following constitute a portion of the imprecatory Psalms—those which seem to cry for vengeance and to manifest a revengeful and unforgiving spirit. This is the portion of the Psalms that has been regarded as so difficult to reconcile with the forgiving spirit enjoined in the gospel. On this subject, see the General Introduction, Section 6.