Ashamed to say I never heard of such a book. I recognize the name, but...he had a book too? Which brings me to the question: why was it not included in the bible? So many gospels and books tossed to the wayside and not in there. So..why not?
Anyway..I googled and found this. Interesting.
Book of Enoch - Wikipedia
I have long been fascinated with the book of Enoch. To be clear, there is more than one book. All together there are 3, although, I think it evident that the first one is much, much older than the other 2 and written by a different author. The oldest transcripts date of Enoch 1 date back to the 15th century. However, Jude references Enoch in verse 14 and Jude was written between 70 to 90 AD.
Enoch 1 heavily influenced the early Christian culture and was used a great deal in their studies. Enoch is different than other pseudepigraphic writings because the Canonized Bible references it, which gives it credibility, and the fact it is so darn old. Enoch 1 was even found amongst the Dead Sea scrolls.
It is interesting that Jesus is obviously referenced in Enoch by the verses below even though he is not mentioned by name. It's almost as if written before Jesus walked the earth.
46 At that place, I saw the One in whom belongs the time before time. And his head was white like wool, and there was with him another individual, whose face was like that of a human being. His countenance was foll of grace like that of one among the holy angels. And I asked the one from among the angels who was going with me, and who had revealed to me all the secrets regarding the One who was born of human beings, “Who is this, and from whence is he who is going as the prototype of the Before Time?” And he answered me and said to me, “This is the Son of Man, to whom belongs righteousness and with whom righteousness dwells. And he will open all the hidden storerooms; for the Lord of the Spirits in eternal uprightness. This Son of Man whom you have seen is the One who would remove kings from their thrones. He shall loosen the reins of the strong and crush the teeth of the sinners. He will depose the kings from their thrones and kingdoms. For they do not extol and glorify him, and neither do they obey him, the source of their kingship. The faces of the strong will be slapped and be filled with shame and gloom. Their dwelling places and their beds will be worms. They will have no hope to rise from their beds, for they do not extol the name of the Lord of Spirits. And they have become the judges of the stars of heaven; they raise their hands to reach the Most High while walking upon the earth and dwelling in her. They manifest all their deeds in oppression; all their deeds are oppression. Their power depends upon their wealth. And their devotion is to the gods which they have fashioned with their own hands. But they deny the name of the Lord of Spirits. Ye they like to congregate in his houses and with the faithful ones who cling to the Lord of the Spirits.
48 Furthermore, in that place I saw the fountain of righteousness, which does not become depleted and is surrounded completely by numerous fountains of wisdom. All the thirsty ones drink and become filled with wisdom. Their dwelling places become with the holy, righteous, and elect ones. At that hour, that Son of Man was given a name, in the presence of the Lord of Spirits, the Before-Time, even before the creation of the sun and moon, before the creation of the stars, he was given a name in the presence of the Lord of the Spirits. He will become a staff for the righteous ones in order that they may lean on him and not fall. He is the light of the gentiles and he will become the hope of those who are sick in their hearts. All those who dwell upon the earth shall fall and worship before him, they will glorify, bless, and sing the name of the Lord of the Spirits. For this purpose he became the Chosen One; he was concealed in the presence of the Lord of the Spirits prior to the creation of the world, and for eternity. And he has revealed the wisdom of the Lord of the Spirits to the righteous and the holy ones, for he has preserved the portion of the righteous because they have hated and despised this world of oppression together with all its ways of life and its habits in his name and it is his good pleasure that they have life. In those days, the kings of the earth and the mighty landowners will be humiliated on account of the deeds of their hands. Therefore, on the day of their misery and weariness, they will not be able to save themselves. I shall deliver them into the hands of my elect ones like grass in the fire and like lead in the water, so shall they burn before the face of the holy ones and sink before their sight, an no place will be found for them. On the day of their weariness, there shall be an obstacle on the earth and they will fall on their faces; and they will not rise up again, nor anyone be found who will take them with his hands and raise them up. For they have denied the Lord of the Spirits and his Messiah. Blessed by the name of the Lord of the Spirits!
Notice how scornful Enoch is of the world governments. This is probably why it was left out of the Canonized Bible. After all, I'm sure Constantine did not appreciate being a world leader himself and faced with the prospect of being on the hit list in Enoch. Most people don't realize this but although Constantine embraced Christianity in making it the official religion of his kingdom, Constantine was not a Christian and continued to worship pagan gods. He even murdered members of his own family. It is rumored, though, that Constantine tried to convert on his death bed. So why did Constantine officially embrace the Christian faith even though he did not personally convert? He probably admired how the Christian faith spread despite being severely persecuted. It was almost as if the more Christians were persecuted the more the faith spread, so he adopted it as a tool of conquest.