This weekend, we celebrate a key doctrine of our Faith - the Trinity. The doctrine of the Trinity is the Doctrine that defines us Christian – that Jesus Christ is the Son of God the Father, the Second Person of the Trinity, and that they send the Holy Spirit, the Third Person. All three Persons are one being. This is a true mystery, as our minds cannot fully grasp the fullness of the Trinity. Three distinct persons, yet perfectly united in one being! Because of their unity, the Church teaches that where one is active, all are active, each in His own way (Catechism of the Catholic Church ¶258). In Creation, all three were present and active, in Redemption, all three were present and active, and in our sanctification, all three are active. The 'differences' among the persons of the Trinity is not merely what they do, but rather their interior relationship to the other Persons. Because of this, it is insufficient to simply name the Persons of the Trinity “Creator, Redeemer, Sanctifier.” The only names that come close to capturing the reality of the Trinity is Father, Son, and Holy Spirit, as revealed by Jesus Christ Himself. The Father is eternally begetting the Son, the Son is eternally Begotten, and the Spirit is eternally sent forth from them.
What this means for those who are discerning a vocation is that the vocation comes from all Three Persons of the Blessed Trinity. Those called to be priests are called to offer sacrifice to God the Father, reconfigured
in persona Christi capitis, that is, in the person of Christ as head, and finally empowered in a special way by the Holy Spirit. Priests need to be in relationship to the Persons of the Trinity, in addition to being in relationship to their diocese and parish! The Trinity is a true community, and we, being created in the image and likeness of God, are likewise called into fellowship with the Trinity. Of course, it is only the Trinity that gives us the grace to do so!