A team of researchers has recovered 42 previously unknown pages from a medieval manuscript, revealing previously lost portions of a New Testament text. Using advanced imaging techniques, the scholars uncovered writing that had been erased centuries ago, shedding new light on how biblical works were copied, preserved, and repurposed in the Middle Ages.
The manuscript in question, known as Codex H, is a sixth-century copy of the Letters of St. Paul. It was broken apart in the thirteenth century at the Great Lavra Monastery on Mount Athos in Greece, where its pages were re-inked and reused as binding material and flyleaves in other books. Today, the surviving fragments are scattered across libraries in Italy, Greece, Russia, Ukraine, and France, many of them having been preserved inside the bindings of later manuscripts before being rediscovered centuries later.
Photo courtesy University of Glasgow
Rather than being simply lost, Codex H appears to have been deliberately dismantled as part of routine book repair work. At Mount Athos, older manuscripts were sometimes taken apart and reused as reinforcement for newer volumes—a practical solution that has inadvertently preserved traces of much earlier texts.
The new discovery was made possible through advanced imaging techniques. Researchers used multispectral imaging to examine the surviving pages, revealing faint traces of text that had been transferred onto neighbouring leaves when the manuscript was re-inked. These “ghost” impressions were created when chemicals in the new ink subtly affected facing pages, leaving behind mirror-like traces that are often invisible to the naked eye but recoverable with modern technology.
“The breakthrough came from an important starting point: we knew that at one point, the manuscript was re-inked,” explains Garrick Allen, Professor of Divinity and Biblical Criticism at the University of Glasgow and leader of the Annotating the New Testament: Codex H, Euthalian Traditions, and the Humanities project. “The chemicals in the new ink caused ‘offset’ damage to facing pages, essentially creating a mirror image of the text on the opposite leaf – sometimes leaving traces several pages deep, barely visible to the naked eye but very clear with latest imaging techniques.
“In partnership with the Early Manuscripts Electronic Library (EMEL), researchers used multispectral imaging to process images of the extant pages, in order to recover ‘ghost’ text that no longer physically exists, effectively retrieving multiple pages of information from every single physical page. To ensure historical accuracy, the team also collaborated with experts in Paris to perform radiocarbon dating, confirming the parchment’s 6th-century origin.”
Paris, BnF, Coislin 202 fol.2r – manuscript under normal light and multispectal imaging
Although the recovered material contains passages already known from Paul’s Letters, the discovery offers important insight into how biblical texts were organised and used in the early medieval world. It also provides rare physical evidence of how manuscripts were altered, reused, and preserved over time.
The research highlights several key features of Codex H. The newly recovered pages include some of the earliest known chapter lists for Paul’s Letters, which differ significantly from the divisions used today. They also reveal how sixth-century scribes corrected and annotated their texts, showing that these manuscripts were actively read and modified rather than simply copied.
The manuscript itself offers further clues about early book culture. Its text appears to have been arranged in carefully structured units, with lines grouped according to meaning rather than simply written in continuous blocks. This layout, along with the presence of annotations and corrections, provides valuable insight into how scribes and readers interacted with biblical texts in Late Antiquity and the early Middle Ages.
Although only fragments of Codex H survive today, researchers believe the original manuscript was far larger. Current evidence suggests it may once have contained hundreds of pages, with many more now partially recoverable through the faint ink impressions preserved on surviving leaves.
“Given that Codex H is such an important witness to our understanding of Christian scripture, to have discovered any new evidence – let alone this quantity – of what it originally looked like is nothing short of monumental,” Allen adds.
Beyond the recovered text itself, Codex H tells a broader story about the survival of manuscripts. Its pages have travelled across centuries and continents, preserved, repurposed, and eventually rediscovered. What began as a practical act of recycling in a medieval monastery has become an unexpected archive, allowing modern scholars to reconstruct parts of a long-lost book.
The project was funded by the Templeton Religion Trust and the Arts and Humanities Research Council, with the cooperation of the Great Lavra Monastery. A new print edition of Codex H is forthcoming, while a digital version has already been made available online, giving scholars and the public access to these reconstructed pages for the first time in centuries.
A team of researchers has recovered 42 previously unknown pages from a medieval manuscript, revealing previously lost portions of a New Testament text. Using advanced imaging techniques, the scholars uncovered writing that had been erased centuries ago, shedding new light on how biblical works were copied, preserved, and repurposed in the Middle Ages.
The manuscript in question, known as Codex H, is a sixth-century copy of the Letters of St. Paul. It was broken apart in the thirteenth century at the Great Lavra Monastery on Mount Athos in Greece, where its pages were re-inked and reused as binding material and flyleaves in other books. Today, the surviving fragments are scattered across libraries in Italy, Greece, Russia, Ukraine, and France, many of them having been preserved inside the bindings of later manuscripts before being rediscovered centuries later.
Rather than being simply lost, Codex H appears to have been deliberately dismantled as part of routine book repair work. At Mount Athos, older manuscripts were sometimes taken apart and reused as reinforcement for newer volumes—a practical solution that has inadvertently preserved traces of much earlier texts.
The new discovery was made possible through advanced imaging techniques. Researchers used multispectral imaging to examine the surviving pages, revealing faint traces of text that had been transferred onto neighbouring leaves when the manuscript was re-inked. These “ghost” impressions were created when chemicals in the new ink subtly affected facing pages, leaving behind mirror-like traces that are often invisible to the naked eye but recoverable with modern technology.
“The breakthrough came from an important starting point: we knew that at one point, the manuscript was re-inked,” explains Garrick Allen, Professor of Divinity and Biblical Criticism at the University of Glasgow and leader of the Annotating the New Testament: Codex H, Euthalian Traditions, and the Humanities project. “The chemicals in the new ink caused ‘offset’ damage to facing pages, essentially creating a mirror image of the text on the opposite leaf – sometimes leaving traces several pages deep, barely visible to the naked eye but very clear with latest imaging techniques.
“In partnership with the Early Manuscripts Electronic Library (EMEL), researchers used multispectral imaging to process images of the extant pages, in order to recover ‘ghost’ text that no longer physically exists, effectively retrieving multiple pages of information from every single physical page. To ensure historical accuracy, the team also collaborated with experts in Paris to perform radiocarbon dating, confirming the parchment’s 6th-century origin.”
Although the recovered material contains passages already known from Paul’s Letters, the discovery offers important insight into how biblical texts were organised and used in the early medieval world. It also provides rare physical evidence of how manuscripts were altered, reused, and preserved over time.
The research highlights several key features of Codex H. The newly recovered pages include some of the earliest known chapter lists for Paul’s Letters, which differ significantly from the divisions used today. They also reveal how sixth-century scribes corrected and annotated their texts, showing that these manuscripts were actively read and modified rather than simply copied.
The manuscript itself offers further clues about early book culture. Its text appears to have been arranged in carefully structured units, with lines grouped according to meaning rather than simply written in continuous blocks. This layout, along with the presence of annotations and corrections, provides valuable insight into how scribes and readers interacted with biblical texts in Late Antiquity and the early Middle Ages.
Although only fragments of Codex H survive today, researchers believe the original manuscript was far larger. Current evidence suggests it may once have contained hundreds of pages, with many more now partially recoverable through the faint ink impressions preserved on surviving leaves.
“Given that Codex H is such an important witness to our understanding of Christian scripture, to have discovered any new evidence – let alone this quantity – of what it originally looked like is nothing short of monumental,” Allen adds.
Beyond the recovered text itself, Codex H tells a broader story about the survival of manuscripts. Its pages have travelled across centuries and continents, preserved, repurposed, and eventually rediscovered. What began as a practical act of recycling in a medieval monastery has become an unexpected archive, allowing modern scholars to reconstruct parts of a long-lost book.
The project was funded by the Templeton Religion Trust and the Arts and Humanities Research Council, with the cooperation of the Great Lavra Monastery. A new print edition of Codex H is forthcoming, while a digital version has already been made available online, giving scholars and the public access to these reconstructed pages for the first time in centuries.
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