That the Torah was dictated by God to Moses on Mount Sinai is the foundation belief of Orthodox Judaism. For millennia, there was no room for any other view. Then, in the early years of the 19th century, a German academic, Julius Wellhausen, spearheaded a revolutionary approach to analyzing the text of the Pentateuch. 

As Rabbi David Harbater tells us in his new book, In the Beginnings: Discovering the Two Worldviews Hidden within Genesis 1-11, Wellhausen was convinced that he had identified four individual compilers of the Torah, each basing his contribution on four originally separate documents. His work, enthusiastically carried forward by other biblical scholars, is known as the documentary hypotheses (DH) model.

Such apparently evidence-based conclusions, propounded so confidently by respected academics, were widely accepted (some of the original conclusions were subsequently modified or dropped altogether). Some deeply religious Jewish scholars, unable to ignore the impressive scholarship of Wellhausen and his school, attempted to reconcile it with traditional Judaism. 

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