The doctrine of the Trinity has become the focal point of theological discussion and has immense implications for our knowledge of God. Professor Torrance shows that God is not a remote, unknowable deity but is free to go outside of himself in order to share with us the Communion of Love which he is himself. Throughout this study, Professor Torrance brings out the existing ecumenical consensus between Roman and Protestant Churches and the recent agreement between Orthodox and Reformed Churches. In the exploration of this theme and, through the examination of critical issues in the history of thought, he points a way toward doctrinal agreement.