Few books in history inspire as much fascination as the Codex Gigas, the legendary medieval manuscript known as the Devil’s Bible. Created in the early 13th century in a Benedictine monastery in Bohemia, the Codex Gigas is the largest surviving medieval manuscript and one of the most mysterious books ever produced.

Combining sacred scripture, historical chronicles, medical knowledge, and encyclopedic texts in a single monumental volume, the Codex Gigas represents an extraordinary attempt to gather the knowledge of an entire era within one book.

Yet its fame is not due only to its size or scholarly content. For centuries, the manuscript has been surrounded by a haunting legend: the story of a monk who allegedly made a pact with the devil to complete the book in a single night.

This combination of history, myth, and monumental craftsmanship has made the Codex Gigas one of the most intriguing artifacts in the history of medieval manuscripts.

Like other enigmatic manuscripts—such as the Voynich Manuscript, still undeciphered to this day—the Codex Gigas reminds us how much of the medieval world remains hidden from modern understanding.

What Is the Codex Gigas?

Created in the Benedictine monastery of Podlažice in Bohemia, in what is today the Czech Republic, the manuscript dates from the early 13th century, approximately between 1200 and 1230. ()

What makes the Codex Gigas particularly extraordinary is its ambitious content. Rather than being simply a Bible, the manuscript functions as a kind of medieval “library in a single book.”

Among its contents are:

• The complete Latin Bible

• Historical chronicles of Bohemia

• Medical texts and treatments

• Monastic rules and liturgical calendars

• Exorcism formulas and prayers

• Encyclopedic knowledge of the medieval world

Such a compilation reflects the medieval monastic ideal of preserving knowledge in service of faith, learning, and community life.

But even among the grand illuminated manuscripts of the Romanesque period, the Codex Gigas stands apart for its immense scale and unique composition.

The Legend of the Monk Who Sold His Soul

The Codex Gigas owes much of its fame to a medieval legend that has been repeated for centuries.

According to tradition, a monk in the monastery of Podlažice broke his monastic vows and was condemned to a terrible punishment: he was to be walled alive within the monastery.

Desperate to escape this fate, the monk promised his superiors that he would create, in a single night, a book that would glorify the monastery forever—a manuscript containing the entire Bible and the total knowledge of the world.

At first the monks accepted the challenge.

But as midnight approached, the monk realized that such a task was impossible for a human being.

In desperation, the legend says he invoked Lucifer, offering his soul in exchange for help completing the manuscript.

The devil accepted.

By dawn, the enormous book was supposedly finished.

To commemorate the pact, the monk is said to have painted a full-page portrait of the devil inside the manuscript—an image that remains one of the most striking and unsettling illustrations in medieval art.

Today, historians reject the supernatural explanation. Handwriting analysis strongly suggests the manuscript was written by a single scribe over many years, possibly even decades, rather than in a single night. ()

Nevertheless, the legend of the monk’s pact with the devil has become inseparable from the Codex Gigas, giving rise to its famous nickname: The Devil’s Bible.

The Devil’s Portrait

One of the most famous features of the Codex Gigas is the full-page illustration of Satan, which occupies an entire leaf within the manuscript.

The figure appears crouched, with clawed hands, horns, and a strange expression—an image unlike almost any other depiction of the devil in medieval manuscripts.

Interestingly, the page facing the devil contains a depiction of the Heavenly City, creating a powerful symbolic contrast between good and evil.

This dramatic juxtaposition may have been intended to remind readers of the spiritual struggle between salvation and damnation.

It is this image above all that has fueled the centuries-long fascination with the Codex Gigas.

The Extraordinary Journey of the Codex Gigas

The story of the Codex Gigas is not only about its mysterious origin. The manuscript also experienced a remarkable journey across Europe.

Medieval Monasteries

After its creation in Podlažice, the manuscript was eventually pawned to the Cistercian monastery of Sedlec, likely due to financial difficulties within the Benedictine community. ()

Later, it was recovered by the Benedictine monastery of Břevnov, and by 1477 it was documented in the library of the monastery of Broumov.

During this period, the manuscript gradually became recognized as a precious bibliographic treasure rather than merely a working monastic text.

The Imperial Court of Rudolf II

In 1594, the Codex Gigas was transferred to Prague, where it entered the famous collection of Holy Roman Emperor Rudolf II.

Rudolf II was renowned for gathering rare books, scientific instruments, artworks, and objects connected to mystery and occult knowledge.

The Devil’s Bible—because of its immense size, unusual contents, and famous devil illustration—was perfectly suited to the emperor’s extraordinary collection.

War Booty and Sweden

The next major chapter in the manuscript’s story occurred in 1648, at the end of the Thirty Years’ War.

Swedish troops captured Prague and seized numerous cultural treasures from the imperial collections. Among them was the Codex Gigas, which was transported to Stockholm as war booty. ()

Since 1649, the manuscript has been preserved in Sweden.

The Fire of 1697

In 1697, a catastrophic fire destroyed much of the Swedish royal castle Tre Kronor, where important parts of the royal library were kept.

According to historical accounts, the Codex Gigas survived the disaster because it was thrown from a window to save it from the flames. ()

This dramatic episode only strengthened the manuscript’s reputation as an almost mythical object—an enormous book associated with the devil that miraculously survived destruction.

The Codex Gigas Today

Today, the Codex Gigas is preserved in the National Library of Sweden in Stockholm, where it is kept under strict conservation conditions. ()

In the modern era, the manuscript has become not only a historical treasure but also a symbol of European cultural heritage.

Through digitization and scholarly study, researchers and historians continue to explore the manuscript’s origins, contents, and artistic techniques.

Yet despite centuries of research, many aspects of the Codex Gigas remain mysterious:

• Who exactly created it?

• Why was such an enormous manuscript produced in a relatively small monastery?

• What purpose did its creators ultimately envision?

These unanswered questions continue to fuel the enduring fascination surrounding the Devil’s Bible.

A Contemporary Tribute: The Codex Gigas XXL Collector’s Edition

Inspired by this extraordinary legacy, Galobart Publishing presents a remarkable contemporary tribute: The Codex Gigas XXL Collector’s Edition.

Conceived as a Limited XXL Collector’s Edition, strictly limited to 66 copies worldwide, this publication honors the monumental scale, mystery, and craftsmanship of the original manuscript.

Each volume is handbound in genuine leather, following traditional techniques and enriched with metallic ornaments inspired by the medieval original.

The edition preserves the proportions of the original Codex Gigas, allowing readers to experience something close to the physical presence of the legendary manuscript itself.

Every page of the facsimile is cut and finished by hand in our atelier, recreating the artisanal processes of the medieval scriptoria and giving each copy a unique texture and authenticity.

Accompanying the main volume is a luxury companion book, containing scholarly essays, iconographic studies, and reflections on the cultural and symbolic significance of the Codex Gigas—including the famous legend of the monk’s pact with the devil.

Both volumes are presented in a handcrafted wooden chest, individually numbered, transforming each set into a true collector’s artifact.

A Book Between History and Legend

More than eight centuries after its creation, the Codex Gigas continues to inspire wonder.

Part historical document, part cultural icon, and part medieval legend, the Devil’s Bible embodies the enduring fascination of humanity with knowledge, mystery, and the unknown.

The story of the Codex Gigas is not merely the story of a book. It is the story of Europe’s cultural memory, a journey through monasteries, empires, wars, fires, and libraries.

And perhaps that is why its legend still endures.

Because some books do not simply transmit knowledge.

They become myths.