The codex can be seen in Stockholm today. The manuscript is called "Codex Gigas" in Latin, i.e. Big Book, but many people refer to it as the Devil's Bible. It was made in Bohemia, in today's Czech Republic, in the 12th century, probably in the Benedictine monastery in Podlažice. At the end of the Thirty Years' War, in 1648, he came to Sweden; it is currently kept by the Stockholm National Library. It took at least two people to carry it, because the book is one meter high and weighs seventy-five kilograms.

The work is also considered diabolical because of the history of its origin.
According to legend, the huge book is the work of a single monk. The man was sentenced to death, and the only way he could escape, or to be more precise, postpone the date of being walled up alive, was if he came up with a work that would bring glory to the monastery in one night. According to legend, he asked Satan for help, who wrote the work in exchange for the monk's soul.
The monk was saved from death and, as a sign of his gratitude, immortalized Satan in his book. Later, however, he regretted his action and asked Mary for guidance on what to do, but he died just before the Virgin could free him from his sins.

The book is said to have an evil power, bringing bad luck to anyone who gets too close to it.
Scientific tests also confirmed that the book is indeed the work of one person, as the handwriting is the same throughout.
However, it is impossible to write it down in one night: if someone were to work on it 24 hours a day, it would still take 5 years to write it.
The book is not only special because of its size, its content is also unique. In addition to the Latin translation of the Bible, the Vulgate, it also includes Jewish historian Josephus Flavius (37-100) Jewish antiquities, Saint Isidore of Seville (560-636) Etymology, ancient medical texts, and the Bohemian Chronicle written by the monk Cosmas of Prague in 1050 copy.
All the works are included in the book in full, but
however, ten pages are missing from it, and it is not known what it might have contained.
The book is believed to be the work of Satan for two reasons. The first is obvious to anyone who looks at page 290 of the book, which has a drawing of a half-meter devil. His face is green, and he bares his horns and claws in a crouching pose.

A collection of anecdotes from the 19th century recounts what happened to the bewitched porter who was accidentally locked overnight in the central reading room of the national library, where the Devil's Bible was also kept. When he woke up, he saw that all the books were moving and dancing. In the morning they found him crouched under the table, he spent the rest of his days in a mental institution....