What is the type of the poem by the rivers of Babylon?

Answer 1

"By the rivers of Babylon" is Psalm 137

1 :

By the rivers of Babylon, there we sat down, yea, we wept, when we remembered Zion.

2 :

We hanged our harps upon the willows in the midst thereof.

3 :

For there they that carried us away captive required of us a song; and they that wasted us required of us mirth, saying, Sing us one of the songs of Zion.

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.

7 :

Remember, O LORD, the children of Edom in the day of Jerusalem; who said, Rase it, rase it, even to the foundation thereof.

8 :

O daughter of Babylon, who art to be destroyed; happy shall he be, that rewardeth thee as thou hast served us.

9 :

Happy shall he be, that taketh and dasheth thy little ones against the stones.