Psalms 137:7

“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 shall be restored; in the day when punishment shall be inflicted on the nations that destroyed it; then, do not forget the Edomites, who took so large and so active a 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 so far from doing anything which would imply a forgetfulness of their native land - as singing cheerful songs there might be…”

“The day - In the time of its destruction. Psalms 137:8”

“137:7-9 The poet witnessed the betrayal of God’s people from Judah by the Edomites, so he curses Edom. The long rivalry between Edom and Judah came to a head during Judah’s last days, when the Edomites handed the Judeans over to the Babylonians (Obad 1:10-11) and rejoiced in Jerusalem’s fall. • This prayer for vengeance is shocking.”

“Remember: Psa 74:18, Psa 79:8-12; Exo 17:14; Sa1 15:2; Hos 7:2 the children: Isa 63:1-6; Jer. 49:7-22; Lam 4:21, Lam 4:22; Eze 25:12-14; Oba 1:10-14, Oba 1:18-21 Raze it: Heb. make bare Psalms 137:8”

“The second part of the Psalm supplicates vengeance upon Edom and Babylon. We see from Obadiah's prophecy, which is taken up again by Jeremiah, how shamefully the Edomites, that brother-people related by descent to Israel and yet pre-eminently hostile to it, behaved in connection with the destruction of Jerusalem by the Chaldaeans as their malignant, rapacious, and inhuman helpers. The repeated imper. Piel ערוּ, from ערה (not imper. Kal from ערר, which would be ערוּ), ought to have been accented on the ult.; it is, however, in both cases accented on the first syllable, the pausal ערוּ (cf. כּלוּ in Psa 37:20, and also הסּוּ, Neh 8:11) giving rise to the same accentuation of the other (in…”