I don't know if you read my hub "Sons of Nephilim a Hoax"
The Book of Enoch is not part of the bible never was and when it was it was in Error, it was removed because it did not Harmonize with the rest of the Bible, it contains things that contradict the whole Bible and is the only book that does this. I could give the numerous faults, but too many for now
The Book of Enoch, estimated date of writing was between 150-80 B.C. and this would also indicate that it was written nearly 4000yrs after Enoch in Genesis. It was a deliberate fraudulent copy from the Torah quoting Torah scripture but twisting the meanings and adding to the Torah.Its intention was to create new religious sects, much like JWs and New Age etc.
Jude:1:14 also quotes from the book of Enoch in Error not realizing that it was a false script.
Heb:11:5 was talking about the correct Enoch, who was never a Prophet neither did he prophecy at any time, or say anything in this book
This Book is not God given, it started the lie that humans could breed with with Fallen Angels,called demons also named Satan the devil.
Its fooled many a Christian, especially a new believer.
Rather know the truth and identify the lie.