Psalms 137:3-6

³For there they that led us captive asked of us words of song, and our tormentors asked of us mirth: 'Sing us one of the songs of Zion.'

⁴How shall we sing the LORD'S song in a foreign land?

⁵If I forget thee, O Jerusalem, let my right hand forget her cunning.

⁶Let my tongue cleave to the roof of my mouth, if I remember thee not; if I set not Jerusalem above my chiefest joy.