In this long-awaited edition of the late Robert Lowry Calhoun's lectures on the history of Christian doctrine, a powerful case is made for the scriptural basis of the ancient ecumenical creeds. The way Calhoun reads the patristic authors helps us see that the Trinitarian "three-yet-one" and Christological "two-yet-one" creedal formulations provide patterns for sorting out the highly diverse biblical ways of speaking of God and of the Messiah (Jesus)...