The Book of Enoch was extant centuries before the birth of Christ and yet is considered by many to be more Christian in its theology than Jewish. It was considered scripture by many early Christians. The earliest literature of the so-called “Church Fathers” is filled with references to this mysterious book. The early second century “Epistle of Barnabus” makes much use of the Book of Enoch. Second and Third Century “Church Fathers” like Justin Martyr, Irenaeus, Origin and Clement of Alexandria all make use of the Book of Enoch. Tertullian (160-230 C.E) even called the Book of Enoch “Holy Scripture”. The Ethiopic Church even added the Book of Enoch to its official canon. It was widely known and read the first three centuries after Christ. This and many other books became discredited after the Council of Laodicea. And being under ban of the authorities, afterwards it gradually passed out of circulation.
This explains the origins of demons, UFOs, fallen angels, & other mysteries, which is the reason for it been banned by previous generations. Having said that, this book was not meant for previous generations, but for our generation of today.