This book challenges institutionalized religion and the legitimacy of the Bible, the central text of Christianity. It presents common deistic arguments; for example, it highlights corruption of the Christian Church and criticizes its efforts to acquire political power. The book advocates reason in the place of revelation, leading to reject miracles and to view the Bible as an ordinary piece of literature rather than as a divinely inspired text. It promotes natural religion and argues for the existence of a creator-God.
