It was not until the Twelfth Century of our era that the Pentateuch as a whole was subjected to rational scrutiny. The man who undertook the ungrateful task was a learned Spanish rabbi, Abraham ben Meir ibn Esra. He unearthed many absurdities, but... it was not until five hundred years later that anything properly describable as scientific criticism... came into being. Its earliest shining lights were the English philosopher Thomas Hobbes, and the Amsterdam Jew, Baruch Spinoza. ..and ever since then the Old Testament has been under searching and devastating examination. H. L. Mencken, Treatise on the Gods