The Codex Gigas: The Devil’s Bible And Everything We Know About It

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The Codex Gigas (the Devil's Bible) was written in the early 13th century in the Benedictine monastery of Podlazice in Bohemia and, during the Middle Ages, was regarded as a wonder of the world. (MICHAL CIZEK/AFP via Getty Images)

Of the volumes of medieval texts that have survived for centuries, one book in particular stands out. The largest of all medieval books, it rightly earned the name Codex Gigas, or "giant book," but what is found within the pages of this 165-lb. volume earned it a much more sinister nickname: The Devil's Bible.