Lamech is a person in Cain's genealogy in the fourth chapter of the Book of Genesis. He is a sixth-generation descendant of Cain; his father was named Methushael, and he was responsible for the ""Song of the Sword"". He is also noted as the first polygamist mentioned in the Bible, taking two wives, Adah and Zillah.
This book follows the antediluvian bloodline of Cain and presents answers to questions that have puzzled biblical scholars (such as the Mark of Cain, the Song of the Sword, and the history of Noah's wife, Naamah) for thousands of years.