Chapter 1 homes in on Spinoza as a Bible critic. Based on existing historiography, it parses the main relevant historical contexts in which Spinoza came to articulate his analysis of the Bible: the Sephardi community of Amsterdam, freethinking philosophers, and the Reformed Church. It concludes with a detailed examination of the Tractatus theologico-politicus, Spinoza’s major work of biblical criticism. Along the way I highlight themes for which Spinoza appealed to the biblical texts themselves: the textual unity of the Bible, and the biblical concepts of prophecy, divine election, and religious laws. The focus is on the biblical arguments for these propositions, and the philological choices that Spinoza made that enabled him to appeal to those specific biblical texts. This first chapter lays the foundation for the remainder of the book, which examines issues of biblical philology and interpretation discussed among the Dutch Reformed contemporaries of Spinoza.