The Book of Enoch (also 1 Enoch) is an ancient Jewish religious work, ascribed by tradition to Enoch, the great-grandfather of Noah, although modern scholars estimate the older sections (mainly in the Book of the Watchers) to date from about 300 BC, and the latest part (Book of Parables) probably to the first century BC.  Most Christian denominations and traditions may accept the Books of Enoch as having some historical or theological interest, but they generally regard the Books of Enoch as non-canonical or non-inspired (a short section of 1 Enoch is cited in Jude 1:14–15).