Lamech

Lamech was a descendant of Cain, the son of Adam and Eve (Genesis 4:18). He was the father of Jabal, Jubal, and Tubal-cain (Genesis 4:20-22). Lamech is notable for being the first polygamist mentioned in the Bible, having married two women, Adah and Zillah (Genesis 4:19). He is also known for his speech to his wives, in which he boasted about killing a man for wounding him and claimed that he would be avenged seventy-sevenfold, in contrast to the sevenfold vengeance promised to Cain (Genesis 4:23-24). This speech suggests a progression of violence and a disregard for the sanctity of human life among Cain's descendants.