The Book of Enoch is now usually designated I Enoch to distinguish it from the later Apocalypse “The Secrets of Enoch” which is known as II Enoch. The former is called the Ethiopic Enoch the latter the Slavonic Enoch after the languages of the earliest versions extant of each respectively.
The Book of Enoch like the Book of Daniel was written originally in Aramaic and partly in Hebrew. No copy of the original language of either is known to be in existence. Latin and Greek versions have only in part been discovered but the Ethiopic Version has been preserved in twenty-nine manuscripts.