Ghosts in Mesopotamian religions

"Unable to stand up, unable to sit down, he laments. Unable to eat, unable to drink, he laments. Held fast by the door-bolt of Namtar, he is unable to rise."

"Father, let me have the Bull of Heaven To kill Gilgamesh and his city. For if you do not grant me the Bull of Heaven, I will pull down the Gates of Hell itself, Crush the doorposts and flatten the door, And I will let the dead leave And let the dead roam the earth And they shall eat the living. The dead will overwhelm all the living!"

"A man who does not value his god is thrown out in the desert; his body is not buried and his heir does not provide his ghost with drinking water through a libation pipe."