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Scholars have long debated how much of the Bible was composed before the destruction of Jerusalem and the Kingdom of Judah, in 586 BCE.While experts agree that key biblical texts were written starting in the 7th century BCE, the exact date of the compilation of these books remains in question.Now, a groundbreaking new study by Tel Aviv University (TAU) published in the Proceedings of the [US] National Academy of Sciences this week, sheds important new light on the debate.“There’s a heated discussion regarding the timing of the composition of a critical mass of biblical texts,” said Prof.Israel Finkelstein of TAU’s Department of Archeology and Ancient Near Eastern Civilizations, who led the research with Prof. Eliezer Piasetzky, of the university’s School of Physics and Astronomy.“But to answer this, one must ask a broader question: What were the literacy rates in Judah at the end of the First Temple period? And what were the literacy rates later on, under Persian rule?” According to the study, the researchers determined that widespread literacy was required for the massive undertaking, and it provides empirical evidence of that literacy in the final days of the Kingdom of Judah.A profusion of literate individuals in Judah may have set the stage for the compilation of biblical works that constitute the basis of Judahite history and theology, such as the early version of the books of Deuteronomy to Second Kings, according to the researchers.Using cutting-edge computerized image processing and machine learning tools, the TAU team analyzed 16 inscriptions unearthed at an excavation in the remote fort of Arad, and deduced that the texts had been written by at least six authors.The content of the inscriptions disclosed that reading and writing abilities existed throughout the military chain of command, from the highest echelon, all the way down to the deputy quartermaster of the fort.The interdisciplinary study was conducted by Shira Faigenbaum-Golovin, Arie Shaus, and Barak Sober, under the supervision of Prof. Eli Turkel and Prof.David Levin, all of TAU’s Department of Applied Mathematics.Other collaborators included Prof.Nadav Na’aman of TAU’s Department of Jewish History, and Prof. Benjamin Sass of TAU’s Department of Archeology and Ancient Near Eastern Civilizations.“We designed an algorithm to distinguish between different authors, then composed a statistical mechanism to assess our findings,” said Sober.“Through probability analysis, we eliminated the likelihood that the texts were written by a single author.”The inscriptions found at Arad consisted of instructions for troop movements and the registration of expenses for food, Sober noted, adding that the tone and nature of the commands precluded the role of professional scribes.“Considering the remoteness of Arad, the small garrison stationed there, and the narrow time period of the inscriptions, this finding indicates a high literacy rate within Judah’s administrative apparatus,” he said.Moreover, Piasetzky asserted that the evidence suggested a formalized educational facility to engender literacy among the greater population.“We found indirect evidence of the existence of an educational infrastructure, which could have enabled the composition of biblical texts,” said Piasetzky.“Reading and writing were not limited to a tiny elite,” he added.Finkelstein said the task for researchers now is to “extrapolate from Arad to a broader area.”“Adding what we know about Arad to other forts and administrative localities across ancient Judah, we can estimate that many people could read and write during the last phase of the First Temple period,” said Finkelstein.“We assume that in a kingdom of some 100,000 people, at least several hundred were literate.”However, he noted that following the fall of Judah, there was a pronounced gap in production of Hebrew inscriptions until the second century BCE, the next period with evidence suggesting widespread literacy.“This reduces the odds for a compilation of substantial Biblical literature in Jerusalem between ca. 586 and 200 BCE,” the professor concluded.