We believe in one God: Father, Son and Spirit.

There is absolute individuality within the Trinity, for we believe that the Father is neither the Son nor the Spirit, nor is the Son the Father or the Spirit, nor is the Spirit the Father or the Son. Each person is distinct from the other two; none loses his personhood within the Trinity.

There is absolute equality within the Trinity. No person has something that the others lack, for each is God and each is all being. None is more God; all are absolutely equal.

There is absolute unity within the Trinity. God is one; the three persons are one. Father, Son and Spirit are three distinct persons, but they are persons in one God.

Ours is a Trinitarian religion. The Trinity is the source of our faith as well as the goal of our lives. We long to live for all eternity the life of the Trinity. Meanwhile, the Trinity is for us the model towards which we strive as a community: free individuals with total equality in complete unity.

Christians look forward in hope to a true communion among all persons with each other and with God. The Spirit of Christ labors in history to build up the bonds of solidarity among all persons until that day on which their union is brought to perfection in the Kingdom of God. Indeed Christian theological reflection on the very reality of God as a trinitarian unity of persons—Father, Son, and Holy Spirit—shows that being a person means being united to other persons in mutual love.

U.S. Bishops, Economic Justice for All, 1986: #64 (p. 16).