In the Book of the Watchers, an Enochic apocalypse from the third century BCE, the sons of God of Gen 6:1-4 are accused of corrupting humankind through their teachings of metalworking, cosmetology, magic, and divination. By tracing the transformations of this motif in Second Temple, Rabbinic, and early medieval Judaism and early, late antique, and Byzantine Christianity, this book sheds light on the history of interpretation of Genesis, the changing...