In his existential fury, Cain kills once. Lamech, his descendant, goes much further. “I have slain a man to my wounding,” says Lamech, “and a young man to my hurt. If Cain shall be avenged sevenfold, truly Lamech seventy and sevenfold” (Genesis 4:23-24). Tubulcain, an instructor of “every artificer in brass and iron” (Genesis 4:22), is by tradition seven generations from Cain—and the first creator of weapons of war. And next, in the Genesis stories, comes the flood. The juxtaposition is by no means accidental.
