Benjamin B. Warfield, one of the Reformed world's most celebrated theologians, was a theological diagnostician who demonstrated a remarkable ability to grasp the origin and direction of theological trends. The challenge in Warfield's day was to explain how God communicated. Pursuing the answer to that question led him on the theological journey that is chronicled in this book. Our day is like Warfield's: the need of the hour is not to explain revelation's source but God's mode of communicating, if we are to maintain that Scripture is indeed God's Word.