Strangely enough, this isn't really a poem, but a biblical passage that I happen to enjoy (believe it or not), not least because it is and for centuries has been the source of a huge misconception in Christian and various other theologies. And Cinderella's cat. In the Disney version.
And it shall come to pass in the day that Jehovah shall give thee rest from thy sorrow, and from thy trouble, and from the hard service wherein thou wast made to serve, that thou shalt take up this parable against the king of Babylon, and say,
“How hath the oppressor ceased! the golden city ceased! Jehovah hath broken the staff of the wicked, the scepter of the rulers; that smote the peoples in wrath with a continual stroke, that ruled the nations in anger, with a persecution that none restrained.
“The whole earth is at rest, and is quiet: they break forth into singing. Yea, the fir-trees rejoice at thee, and the cedars of Lebanon, saying, ‘Since thou art laid low, no hewer is come up against us.’
“Sheol from beneath is moved for thee to meet thee at thy coming; it stirreth up the dead for thee, even all the chief ones of the earth; it hath raised up from their thrones all the kings of the nations.
“All they shall answer and say unto thee, ‘Art thou also become weak as we? art thou become like unto us?’ Thy pomp is brought down to Sheol, and the noise of thy viols: the worm is spread under thee, and worms cover thee.
“How art thou fallen from heaven, O day-star, son of the morning! how art thou cut down to the ground, that didst lay low the nations! And thou saidst in thy heart, ‘I will ascend into heaven, I will exalt my throne above the stars of God; and I will sit upon the mount of congregation, in the uttermost parts of the north; I will ascend above the heights of the clouds; I will make myself like the Most High.’ Yet thou shalt be brought down to Sheol, to the uttermost parts of the pit. They that see thee shall gaze at thee, they shall consider thee, saying, ‘Is this the man that made the earth tremble, that did shake kingdoms; that made the world as a wilderness, and overthrew the cities thereof; that let not loose his prisoners to their home?’
“All the kings of the nations, all of them, sleep in glory, every one in his own house. But thou art cast forth away from thy sepulchre like an abominable branch, clothed with the slain, that are thrust through with the sword, that go down to the stones of the pit; as a dead body trodden under foot. Thou shalt not be joined with them in burial, because thou hast destroyed the land, thou hast slain thy people; the seed of evildoers shall not be named, for ever.”
— Isaiah 14:3–20