We Believe in One God, Three Divine Persons. God, Father, Son and Spirit, are One God. Our Creed professes One God, three Divine Persons. Many mistakes can be made in Trinitarian theology, but it is important that we consider this theological truth before we consider each of the three persons at length. God is One. His “essence” is, as St. Thomas Aquinas explains, “His existence.” God reveals this truth when He first reveals His name to Moses. When Moses asks, “Who am I to say that sent me?” God responds, “I am”. God’s name reveals His Being is Existence itself. Early writings in scripture underline this point: “Hear, O Israel, the Lord your God is One” (Dt. 6:4). God is not one among many. God does not vie for position, because God has no equal. There is only One God, and He has revealed Himself to the Israelites, called them His own people, and called us by Grace to be united to Him in love. Isaiah, the prophets scribed, “I am the first and I am the last; besides me there is no other god.” (Is. 44:6). God is one, and He has no equal. So how do we understand the Trinity, if we believe that God is One? The simple answer to this question must consider what is unique to each person of the Trinity without contradicting the truth that God is One. The three Persons, Father, Son and Spirit, cannot be understood APART from their relation to one another, in perfect love, united in the Divine Essence and Will. In the words of Jesus recorded by John’s Gospel, “the Father and I are ONE.” That is to say, the Father is not identical to the Son, nor the Son identical to the Father; the Father is the Origin of all things, the Son is sent by the Father to redeem mankind through the cross, but they are ONE in mission, purpose, will, intention, and in Divinity. We Believe in One God, Three Divine Persons.