Speaking about the Book of Enoch
My belief is that If the book was written by someone with the name of "Enoch", it was NOT the Enoch of Genesis, for the book did not appear on the earth until about 200 years before Jesus Christ. Therefore, any claim that the writting was from the Enoch of Genesis automaticly makes the entire book a lie.
And if it was written by someone with the idea of passing it off as having been written by the Enoch of Genesis, then the entire book is a collection of made up stories.
Here is A random collection of thoughts about the writting known as the Book of Enoch, taken from the Internet.
• There is a consensus that the book does not contain the authentic words of the ancient patriarch Enoch, since he would have lived (based on the chronologies in the Book of Genesis) several thousand years earlier than the first known appearance of the book attributed to him.
• The Book of Enoch was certainly not authored by Noah's grandfather (there is more than one Enoch in the annals of Hebrew history).
• Speculation of most scholars place the original writing of the Book of Enoch during the second century B. C.
• The Book of Enoch is a book written between the Old and New Testaments. Probable date of writing was between 150-80 B.C. Copies of the Book of Enoch have been found among the Dead Sea scrolls. If this date is accurate, obviously the Book of Enoch was not written by the real Enoch who lived before the flood.
• The Book of Enoch was banned as heretical by later Church fathers mainly because of its theme concerning the nature and actions of the fallen angels. In fact, the material infuriated some Church fathers. And, some rabbi even would not give credence to it. Probably it was considered such a sacrilege that it was denounced, cursed, banned, and no doubt burned and shredded.
• "The Book of Enoch is a pseudepigraphical work (a work that claims to be by a biblical character).