Holy Trinity Is Great Mystery of Faith
May 31, 2026
We have returned to Ordinary Time, but the two Sundays after Pentecost celebrate two major doctrines of the Church. This Sunday is the Feast of the Holy Trinity, the doctrine which identifies us as Christians. Next Sunday is the Feast of the Body and Blood of the Lord (formerly Corpus Christi), which honors the doctrine that most identifies us as Catholic.
Last Sunday, in the Gospel for Pentecost, we heard Jesus give us the Great Commission, “Go. Make disciples of all nations, baptizing them in the name of the Father, and the Son and the Holy Spirit.” He gives us this Trinitarian formula. Throughout the Gospels, He speaks of His Father in Heaven, of the Holy Spirit, and of Himself in terms and images that indicate that He is truly human and truly divine. But He never actually sits down with the Twelve and says, “Listen guys, there is one God and He is actually three persons. And I am not only the human being Jesus of Nazareth, but I am also the Second Person of the Blessed Trinity.”
The early Church will spend centuries working out the philosophical language to explain how God is both one and three, and who each of these persons is, and how they relate to one another. Jesus is one Person, with two natures—human and divine. And there is only one God who consists of three Persons, Father, Son and Holy Spirit. It is the greatest mystery of our faith. This led to many disagreements, including some very contentious fights, as the Church sought to reconcile some seemingly contradictory truths.
There are several religions that profess belief in one God, including Islam and Judaism. There are others that believe in many gods. But only Christianity worships One God, who is Three Persons. Belief in and worship of this Triune God is what makes us Christian.
—Fr. Mike Comer
We have returned to Ordinary Time, but the two Sundays after Pentecost celebrate two major doctrines of the Church. This Sunday is the Feast of the Holy Trinity, the doctrine which identifies us as Christians. Next Sunday is the Feast of the Body and Blood of the Lord (formerly Corpus Christi), which honors the doctrine that most identifies us as Catholic.
Last Sunday, in the Gospel for Pentecost, we heard Jesus give us the Great Commission, “Go. Make disciples of all nations, baptizing them in the name of the Father, and the Son and the Holy Spirit.” He gives us this Trinitarian formula. Throughout the Gospels, He speaks of His Father in Heaven, of the Holy Spirit, and of Himself in terms and images that indicate that He is truly human and truly divine. But He never actually sits down with the Twelve and says, “Listen guys, there is one God and He is actually three persons. And I am not only the human being Jesus of Nazareth, but I am also the Second Person of the Blessed Trinity.”
The early Church will spend centuries working out the philosophical language to explain how God is both one and three, and who each of these persons is, and how they relate to one another. Jesus is one Person, with two natures—human and divine. And there is only one God who consists of three Persons, Father, Son and Holy Spirit. It is the greatest mystery of our faith. This led to many disagreements, including some very contentious fights, as the Church sought to reconcile some seemingly contradictory truths.
There are several religions that profess belief in one God, including Islam and Judaism. There are others that believe in many gods. But only Christianity worships One God, who is Three Persons. Belief in and worship of this Triune God is what makes us Christian.
—Fr. Mike Comer
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