@Graham Brecker Key reasons for its exclusion: Authorship and authenticity: The book is considered a pseudepigraphal text, meaning it was falsely attributed to the biblical figure Enoch. Jewish tradition also holds that inspiration ceased after the last book of the Old Testament was written, and the Book of Enoch was produced after that time. Contradictory theological content: The book's depiction of angels having sexual relations with humans and producing giants (Nephilim) contradicts Jesus' teaching in Matthew 22:30, which states that in the resurrection, angels do not marry. Its detailed angelology, including the names of many fallen angels and giants, did not appear in other accepted scriptures. Controversial and mystical themes: The book is largely apocalyptic, focusing on visions of the end times and the spiritual world. Its sensational and mystical content, particularly the elaborate backstory of Genesis 6:1-4, was seen as strange and less relevant for widespread use compared to other books. Conflict with evolving doctrine: The teachings in Enoch were seen as not being in harmony with the developing doctrines of the early church, especially concerning the Trinity and the divinity of Jesus