The Book of Enoch is any of several pseudepigraphal works that attribute themselves to Enoch, the great-grandfather of Noah; that is, Enoch son of Jared (Genesis 5:18). 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; see also Hebrews 11:5).

The Book of Enoch, written during the second century B.C.E., is one of the most important non-canonical apocryphal works, and probably had a huge influence on early Christian, particularly Gnostic, beliefs. Filled with hallucinatory visions of heaven and hell, angels and devils, Enoch introduced concepts such as fallen angels, the appearance of a Messiah, Resurrection, a Final Judgement, and a Heavenly Kingdom on Earth.

Book of Enoch is one of the most important non-canonical apocryphal works