Tertullian

“ Jude refers to Enoch’s prophesyings no more proves that this book is other than apocryphal than St. Paul’s reference to Jannes and Jambres makes Scripture of the Targum. The apostle Jude does, indeed, authenticate that particular saying by inspiration of God, and doubtless it was traditional among the Jews. St. Jerome’s references to this quotation may be found textually in Lardner. [2] Although the book is referred to frequently in the Patrologia, Tertullian only, of the Fathers, pays it the respect due to Scripture. ”

“ Davidson ascribes its authorship to pre-Messianic times, but thinks it has been interpolated by a Jewish Christian. Tertullian’s negative testimony points the other way: he evidently relies upon its “Christology” as genuine ”