Psalm 137:4-9 MSG

4 Oh, how could we ever sing God's song in this wasteland?
5 If I ever forget you, Jerusalem, let my fingers wither and fall off like leaves.
6 Let my tongue swell and turn black if I fail to remember you, If I fail, O dear Jerusalem, to honor you as my greatest.
7 God, remember those Edomites, and remember the ruin of Jerusalem, That day they yelled out, "Wreck it, smash it to bits!"
8 And you, Babylonians - ravagers! A reward to whoever gets back at you for all you've done to us;
9 Yes, a reward to the one who grabs your babies and smashes their heads on the rocks!