Psalms 137:6
May my tongue cling to the roof of my mouth
What it says
If Jerusalem is not remembered as highest joy, may the tongue cling to the roof of the mouth.
What it is doing
This verse deepens the oath by tying speech itself to faithful remembrance.
In context
1By 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 5If I forget you, O Jerusalem, 6May my tongue cling to the roof of my mouth 7Remember, O LORD, 8O Daughter of Babylon, 9Blessed is he who seizes your infants