Trinity Sunday 2021
Thus, in the words of the Athanasian Creed: “the Father is God, the Son is God, and the Holy Spirit is God, and yet there are not three Gods but one God.”
In Scripture there is as yet no single term by which the Three Divine Persons are denoted together. The word trias (of which the Latin trinitas is a translation) is first found in Theophilus of Antioch about A.D. 180. He speaks of “the Trinity of God [the Father], His Word and His Wisdom
first creed in which it appears is that of Origen’s pupil, Gregory Thaumaturgus. In his Ekthesis tes pisteos composed between 260 and 270, he writes:
There is therefore nothing created, nothing subject to another in the Trinity: nor is there anything that has been added as though it once had not existed, but had entered afterwards: therefore the Father has never been without the Son, nor the Son without the Spirit: and this same Trinity is immutable and unalterable forever (P.G., X, 986).
The Vatican Council has explained the meaning to be attributed to the term mystery in theology. It lays down that a mystery is a truth which we are not merely incapable of discovering apart from Divine Revelation, but which, even when revealed, remains “hidden by the veil of faith and enveloped, so to speak, by a kind of darkness” (Constitution, “De fide. cath.”, iv). In other words, our understanding of it remains only partial, even after we have accepted it as part of the Divine message. Through analogies and types we can form a representative concept expressive of what is revealed, but we cannot attain that fuller knowledge which supposes that the various elements of the concept are clearly grasped and their reciprocal compatibility manifest
