The book of Enoch is one of the pseudepigraphal works that attribute themselves to Enoch, the great-grandfather of Noah; that is, Enoch son of Jared (Genesis 5:18). It is interesting to note that no scholars believe the book of Enoch to have truly been written by Enoch.
Enoch was seven generations from Adam, prior to the Flood (Genesis 5:1-24). Enoch is also one of the two people in the Bible taken up to heaven without dying (the other being Elijah), as the Bible says “And Enoch walked with God, and he was not; for God took him” (Genesis 5:24; Hebrews 11:5).
In the Bible
The biblical book of Jude quotes from the Book of Enoch in verses 14-15, “Enoch, the seventh from Adam, prophesied about these men: ‘See, the Lord is coming with thousands upon thousands of his holy ones to judge everyone, and to convict all the ungodly of all the ungodly acts they have done in the ungodly way, and of all the harsh words ungodly sinners have spoken against him.’” But this does not mean that the Book of Enoch is inspired by God and should be in the Bible.
There is no doubt that Enoch made these statements as Jude 1:14 confirms; but that doesn’t necessarily mean that he authored the entire Book of Enoch (or ANY of it for that matter). The book was not accepted in the cannon of Holy books, mostly because its erroneous doctrines.
The Book of Enoch tells the story of how 200 angels, or Watchers, decided to rebel against the heavenly laws and descended to the plains and took human wives. But Jesus clearly taught the angels don’t marry , “For when they shall rise from the dead, they neither marry, nor are given in marriage; but are as the angels which are in heaven” (Mark 12:25).
And the Book of Enoch adds that the union of these angles with women produced 450-feet tall giants (chapter 7:12-15) upon the earth. This teaching is unscriptural, and has no solid evidence to support it (Biblically or scientifically). Also, the Book of Enoch claims that a demon named Gadreel led Eve astray and introduced weaponry to mankind. But the Bible identifies the serpent which deceived Eve in the Garden of Eden as Satan (Ezekiel 28:13). For these reasons, we should regard the Book of Enoch in the same manner we do the other Apocryphal writings.
In His service,