This text addresses three main questions: how we should think and speak about God in a changing and largely secularized world; the nature of the person and incarnation of Jesus Christ - is he fully man and fully God?; and how does a theologian know about God and the destiny of man? It addresses issues such as: the suffering of God; the Cosmic Christ; the pre-existence of Jesus Christ; and the development of the Christian doctrine, as well as presenting the history of those groups and individuals who advanced the discussion of such questions.