The Book of Enoch - End Time Prophecy From Before The Flood
The book of Enoch is an ancient book which has been proven to date back to at least the time before Christ, although I personally believe that it legitimately originates from a time before the flood.
The Ethiopian Amharic Bible includes it, and fragments of the book of Enoch were also discovered with the Dead Sea Scrolls in Qumran.
The Book of Enoch was not written for ancient times, it states right in the beginning that it was written for "a far off generation". It was written for NOW