Gwatkin’s lectures are published in two parts which do not correspond entirely to the division in the lecture series. The first volume is the more philosophical of the two and addresses arguments for the existence of God based upon uniformity in the natural world; the possibility of personal revelation; that all revelation comes from God and is practical, moral and rational; revelation as expressed through the actions of God; historic facts as means of revelation; and the continuing nature of revelation as challenging to dogmatic faith. The final portion of the first volume comprises three lectures from the second series and addresses the development of primitive religions, the rise of polytheism and anthropomorphism and the fundamental shift in Western religious thinking brought about through Greek philosophy.