An international team of researchers has recovered 42 long-lost pages from Codex H, a sixth-century Greek codex containing the Letters of St. Paul. The discovery offers new insight into how early Christian texts were read, organized, and preserved.
The study was led by Garrick Allen of the University of Glasgow. Codex H, also known as GA 015, is considered one of the earliest surviving witnesses to the New Testament. It includes the Euthalian apparatus, a system of chapter lists, introductions, and cross-references that guided early readers through the text.
Manuscript reused and scattered over centuries
The manuscript was dismantled in the 13th century at the Great Lavra Monastery on Mount Athos, Greece. Its parchment pages were reused as binding material for other books, a common practice in the medieval period when writing materials were scarce.
Over time, the original text became hidden within later manuscripts. Fragments of Codex H are now spread across collections in several countries, making it difficult for scholars to reconstruct the original work.
Imaging technology uncovers “ghost text”
Researchers identified a key clue in the reused pages. When the manuscript was re-inked, chemicals in the newer ink caused faint mirror impressions of the original writing to transfer onto nearby leaves.
✍Recuperan 42 páginas perdidas del Nuevo Testamento: Un rastro químico ha permitido recuperar este valioso fragmento de la Biblia pic.twitter.com/x2KVceUKYa
— Historia National Geographic (@HistoriaNG) April 27, 2026
To recover these traces, the team worked with the Early Manuscripts Electronic Library and used multispectral imaging. This method captures images under different wavelengths of light, revealing ink that is invisible under normal conditions.
The technique allowed researchers to detect “ghost text,” or faint impressions of writing that no longer exists physically. In some cases, a single page revealed multiple layers of hidden content.
Dating confirms early origins
Experts in Paris carried out radiocarbon dating on the parchment. The results confirmed that the manuscript dates to the sixth century, reinforcing its status as an early source for the New Testament.
Findings shed light on early Christian practices
The recovered pages contain known passages from Paul’s Letters but offer new context. They include some of the earliest known chapter lists, which differ from modern divisions. Researchers say this shows that the structure of biblical texts evolved.
The fragments also reveal how scribes worked. Corrections, notes, and markings show that copying was an active process. Scribes engaged with the text rather than simply reproducing it.
Allen described the discovery as significant. “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,” he said.
Researchers say the findings highlight how modern technology can uncover lost material and deepen understanding of early Christian intellectual traditions.
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