A Swan Song

Psa 137:1  By the rivers of Babylon, There we sat down, yea, we wept, When we remembered Zion.
Psa 137:2  Upon the willows in the midst thereof We hanged up our harps.
Psa 137:3  For there they that led us captive required of us songs, And they that wasted us required of us mirth, saying, Sing us one of the songs of Zion.
Psa 137:4  How shall we sing Jehovah's song In a foreign land?
Psa 137:5  If I forget thee, O Jerusalem, Let my right hand forget her skill.
Psa 137:6  Let my tongue cleave to the roof of my mouth, If I remember thee not; If I prefer not Jerusalem Above my chief joy.
Psa 137:7  Remember, O Jehovah, against the children of Edom The day of Jerusalem; Who said, Rase it, rase it, Even to the foundation thereof.
Psa 137:8  O daughter of Babylon, that art to be destroyed, Happy shall he be, that rewardeth thee As thou hast served us.
Psa 137:9  Happy shall he be, that taketh and dasheth thy little ones Against the rock.