This post looks at the rise of the dominant scholarly hypothesis that the Old Testament came together through the efforts of various editors over time collating and editing a range of earlier sources. The structure and bulk of the contents of the post is taken from Philippe Wajdenbaum’s discussion of the Documentary Hypothesis.
The complete set of these posts either outlining or being based on Philippe Wajdenbaum’s Argonauts of the Desert: Structural Analysis of the Hebrew Bible, are archived here.
Before the Documentary Hypothesis there was Spinoza.
Let us conclude, therefore, that all the books which we have just passed under review are apographs — works written ages after the things they relate had passed away. And when we regard the argument and connection of these books severally, we readily gather that they were all written by one and the same person, who had the purpose of compiling a system of Jewish antiquities, from the origin of the nation to the first destruction of the city of Jerusalem. The several books are so connected one with another, that from this alone we discover that they comprise the continuous narrative of a single historian. . . . .
The whole of these books, therefore, lead to one end, viz. to enforce the sayings and edicts of Moses, and, from the course of events, to demonstrate their sacredness. From these three points taken together, then, viz. the unity and simplicity of the argument of all the books, their connection or sequence, and their apographic character, they having been written many ages after the events they record, we conclude, as has just been said, that they were all written by one historiographer.
So Spinoza was led to conclude (from the common style, language and purpose) that there was a single author (albeit one who used earlier source documents) and he opted for that author being Ezra.