By the Rivers of Babylon
Beside Babylon's rivers the exiles weep at the memory of Zion and hang their harps in the trees while their captors demand songs of joy. The refusal to sing shows that the songs of the LORD cannot be detached from the land, the city, and the grief of exile as though they were entertainment.
B1y the rivers of Babylon we sat and wept 2There on the willows 3for there our captors requested a song; 4How can we sing a song of the LORD
The speaker binds memory to the body itself, asking for the right hand and tongue to fail if Jerusalem is ever forgotten or set below the highest joy. Jerusalem is not treated here as a fading past but as the fixed center of identity and worship.
5If I forget you, O Jerusalem, 6May my tongue cling to the roof of my mouth
The psalm then asks the LORD to remember Edom's violence when Jerusalem fell and declares that Babylon, marked for destruction, will be repaid for what it has done. The closing blessing is severe and unsparing, giving voice to a people whose world has been shattered and who can only answer by naming judgment in the same register of ruin they have suffered.
7Remember, O LORD, 8O Daughter of Babylon, 9Blessed is he who seizes your infants