Cain is a dramatic work by Byron published in 1821. In Cain, Byron attempts to dramatize the story of Cain and Abel from Cain's point of view. Cain is an example of the literary genre known as closet drama. The play commences with Cain refusing to participate in his family's prayer of thanksgiving to God. Cain tells his father he has nothing to thank God for because he is fated to die. As Cain explains in an early soliloquy, he regards his mortality as an unjust punishment for Adam and Eve's transgression in the Garden of Eden, an event detailed in the Book of Genesis. Cain's anxiety over his mortality is heightened by the fact that he does not know what death is. At one point in Act I, he recalls keeping watch at night for the arrival of death, which he imagines to be an anthropomorphic entity. The character who supplies Cain with knowledge of death is Lucifer.