(Historians, of course, note that handwriting analysis proves only one scribe wrote it, likely over 20–30 years—but the legend is far more fun.)
There is a book that, according to legend, was written in a single night by a monk who sold his soul to Lucifer. It is so large it requires two people just to lift it. It contains the entire Latin Bible, but also includes exorcism rituals, medical cures, and a full-page portrait of the Devil himself. Codex Gigas Full Book English Translation
The good news? The mystery is part of the magic. This book was designed to be unreadable to the masses—a object of power and awe. By hunting for the translation, you are engaging with a 700-year-old riddle. according to legend