The Line of Cain

Cain settles in the land of Nod, builds a city, and his lineage produces cultural innovators — Jabal the herder, Jubal the musician, Tubal-Cain the metalworker. But the line also produces Lamech, who boasts about killing a man and declares he'll be avenged seventy-seven times. Human civilization advances, but so does human brutality.