A letter like this, clear cut in its thought, teeming with ideas emanating from an unique religious experience, and admirably adjusted to known situations, bears on the face of it the marks of genuineness even without recourse to the unusually excellent external attestation.
The genuineness and inspiration of Enoch were believed in by the writer of the Ep. of Barnabas, Irenaeus, Tertullian and Clement of Alexandria.
With the critical renaissance of the early part of the 19th century, doubts were raised as to the genuineness of the letter (e.g.
He published the Ars Geometriae, in two books, as given in these manuscripts; but critics are generally inclined to doubt the genuineness even of these.
Nevertheless there does exist evidence for the genuineness of the physical phenomena which deserves consideration.