The study of the origin and nature of knowledge. Deals with questions like: What can we know? How do we know it? How do we know it is true? To what extent can we know it? And so forth.
Within its 66 books, the Bible contains a complete system of thought. Paul tells us that "All the treasures of wisdom and knowledge are in Christ Jesus." "All Scripture is given by inspiration of God and is profitable for doctrine, for reproof, for correction, for instruction in righteousness, that the man of God may be complete, thoroughly equipped for every good work." The Bible tells us how we may know truth, what reality is like, how we should think and act, and even what governments should do. Philosophers usually call these studies (1) epistemology: the theory of knowing; (2) metaphysics: the theory of reality; (3) ethics: the theory of conduct; and (4) politics: the theory of government. The first of these, epistemology, is the most important, for it is the most basic.