Psalms 137:6

If I do not remember thee, let my tongue cleave to the roof of my mouth, in an agony of thirst and suffering; if I prefer not Jerusalem above my chief joy, literally, "if I do not place Jerusalem above the summit of my joy," that is, if he, and all believing Jews with him, did not consider the Sanctuary of Jehovah the source of his greatest delight in life. It is an expression of homesick longing which properly pictures the deep remorse and grief of the captives. The poet now, in holy anger, turns to call God's wrath down upon the enemies of Israel, who were, at the same time, the enemies of Jehovah.