Experts have deciphered an ancient manuscript, finding that it represents the earliest surviving copy of a gospel about Jesus' childhood.

The fragment of papyrus—a paper-like material used in antiquity as a writing surface—was being kept at the Hamburg, Germany's Carl von Ossietzky State and University Library, but for decades it had largely gone unnoticed.

But a study published in the journal Zeitschrift für Papyrologie und Epigraphik says a pair of researchers have determined that the ancient Greek text written on the fragment comes from the Infancy Gospel of Thomas (IGT) and represents the oldest known version of it.

The IGT is one of the "apocryphal" infancy gospels, a set of early Christian writings that are generally not considered part of the biblical canon by the religion's major denominations.

The papyrus fragment from the Hamburg Carl von Ossietzky State and University Library in Germany. Researchers have determined that the text is dated to the 4th to 5th century and represents an early copy of... The papyrus fragment from the Hamburg Carl von Ossietzky State and University Library in Germany. Researchers have determined that the text is dated to the 4th to 5th century and represents an early copy of the Infancy Gospel of Thomas. Staats- und Universitätsbibliothek Hamburg/Public Domain Mark 1.0

These writings provide details about the early life of Jesus, although they are of uncertain origin. Despite not being included in the Bible, the stories were popular and widespread in antiquity and the later medieval period.

Before this latest study, an 11th-century codex represented the oldest known Greek version of the IGT, which is thought to have been written in the second century.

But the study's authors—Lajos Berkes of the Institute for Christianity and Antiquity at Humboldt-Universität zu Berlin and Gabriel Nocchi Macedo of the University of Liège, Belgium—managed to date the Hamburg library papyrus fragment to the fourth to fifth centuries.

"The fragment is of extraordinary interest for research," Berkes said in a press release. "On the one hand, because we were able to date it to the 4th to 5th century, making it the earliest known copy. On the other hand, because we were able to gain new insights into the transmission of the text."

The study's findings support the view that the IGT was originally written in Greek, according to the researchers.

As well as dating the papyrus fragment, which originated in Egypt, the authors deciphered the text written on it. This text is spread out across 13 lines, with each line featuring roughly 10 Greek letters.

Fresco of Jesus in a church in Vienna, Austria. The infancy gospels are focused on the early life of Jesus. Fresco of Jesus in a church in Vienna, Austria. The infancy gospels are focused on the early life of Jesus. iStock

The content of the papyrus had long been overlooked because it was not considered to be of significant historical value.

"It was thought to be part of an everyday document, such as a private letter or a shopping list, because the handwriting seems so clumsy," Berkes said. "We first noticed the word Jesus in the text. Then, by comparing it with numerous other digitized papyri, we deciphered it letter by letter and quickly realized that it could not be an everyday document."

Analysis of the text led the researchers to conclude it represented a copy of the IGT.

"From the comparison with already known manuscripts of this Gospel, we know that our text is the earliest. It follows the original text, which according to current state of research was written in the 2nd century A.D.," Berkes said.

The researchers suggest that this particular text may have been created in a school or monastery as part of a writing exercise, as evidenced by the clumsy handwriting and irregular lines, among other factors.

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