Includes bibliographical references and indexes.

The formulation of the doctrine of the Trinity. Formulating the doctrine in the first and second centuries ; Formulating the doctrine in the third century ; Formulating the doctrine in the fourth century -- Problems concerning the doctrine of the Trinity. Is the Trinity biblical and does it make any practical difference? ; Is the doctrine of the Trinity metaphysically intelligible and logically coherent? ; Is trinitarian Christianity the only way for salvation for all persons? -- A contemporary statement of the doctrine of the Trinity. The Trinity in the Old Testament ; The Trinity in the New Testament ; The Trinity in John's Gospel ; The metaphysical basis of trinitarian theology ; The logical structure of the doctrine of the Trinity ; The triune God of all people ; Internal relations between the members of the Trinity ; Prayer, worship, and the triune God -- Conclusion : practical considerations and future prospects.