Enoch1 or Ethiopian Enoch was one of the most respected Prophetic books of the early Christian Church. It was one of the only non gospels to be quoted by nearly every Church Father.
The core of its content deals with Enoch's revelations. The more interesting part and likely the part which led to its denial deals with the fallen angels asking enoch to intercede with God on their behalf and his righteous accusations against the many evil kings of earth. The intercession was a great threat to the Church of Rome after Nicaea because it implies that many of the fallen angels were good people being persecuted by a premadonna God.
One Ethiopian Bishop who was pro enoch went as far to say that "his truths shame God himself." An anti enochian wrote "his words are a challenge we dare not meet.
Enoch's revelations, unlike Revelations, are more indictment than description, likely another factor which made the Church of Rome do everything in their power to discredit and even deny the Book's very existence.
Enoch 1:9 was particulary terrifying for it described a world where all who oppose righteous truth, even innocently but with godly conviction, will be judged wanting.
What one can say with surety was that the early Church, the true Church of Christ, knew that enoch was second only to Jesus. A later non Christian scholar mused, "
God took enoch directly to heaven, for he feared that in death, enoch might choose redemption for the fallen, and the Kingdom itself would fall to such a righteous man."
Regardless, all scholars and many Christians agree on one thing. Enoch's denial and deletion makes Christianity's essence suspect, and that the loss of such wisdom had no positive effects on the Church, only negative ones.
Fear, after all, is the mind killer, and the Church of Rome, in its cowardice and complacency fear Enoch above all beings, moreso than God himself.
A wiki link whose links contain sources for all quotes and most statements made above.
http://en.wikipedia.org/wiki/1_Enoch
Enjoy. I always do.