Karl Barth's approach to the doctrine of God is manifest materially in his discussion of the doctrine of the Trinity, as also in the way in which he relates this doctrine to those of revelation, election, creation and reconciliation. To get to the heart of Barth's understanding of God, however, one is required to recognize its formal significance and, more specifically, the fact that his theology takes place within a church dogmatics. In contrast to so many major theological expositions in the history of thought, Barth refuses to treat the doctrine as if it had a self-contained locus within a 'systematic theology' or exposition of Christian doctrine. How Barth treats the doctrine of God and how he conceives the whole task of dogmatics are irreducibly interrelated. It is this interrelationship which constitutes perhaps the most distinctive facet of his whole approach and with which one must begin.