The Book of Giants
The Book of Giants is an apocryphal book which expands upon the Genesis narrative of the Hebrew Bible, in a similar manner to the Book of Enoch. Together with this latter work, The Book of Giants "stands as an attempt to explain how it was that wickedness had become so widespread and muscular before the flood; in so doing, it also supplies the reason why God was more than justified in sending that flood." The text's composition has been dated to before the 2nd century BC. The Book of Giants is an antediluvian (pre-Flood) narrative that was received primarily in Manichaean literature and known at Turfan.