Psalms 137:5 KJV

If I forget thee, O Jerusalem, let my right hand forget her cunning.
Psalms 137:5, King James Version

In context

4 How shall we sing the Lord’s song in a strange land?

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

6 If I do not remember thee, let my tongue cleave to the roof of my mouth; if I prefer not Jerusalem above my chief joy.