It is Holy Trinity Sunday. We may wonder how our Parish Priest is going to tackle this central mystery of our “Christian faith and life.” They may wonder too! For it is indeed a mystery. The Holy Trinity is “one of the ‘mysteries that are hidden in God, which can never be known unless they are revealed by God.”
Thus, we first find the mention of the Holy Trinity in the Book of Genesis. “For God said, ‘Let us make man in our image, after our likeness...” and in the Gospel of Matthew we have the Trinity manifested, namely, “And when Jesus was baptized, he went up immediately from the water, and behold, the heavens were opened and he saw the Spirit of God descending like a dove, and alighting on him; and lo, a voice came from heaven, saying, ‘This is by beloved Son, with whom I am well pleased.”
As a child, we may have learned from the Penny Catechism from Question 25 which asked, “Are there three Persons in God?” And we learned the answer (probably by rote) that “There are three Persons in God, God the Father, God the Son and God the Holy Ghost.”
And yet we read in Deuteronomy “Hear, O Israel: The Lord our God is one Lord; and you shall love the Lord your God with all your heart, and with all your soul, and with all your might.” Yes, “the Trinity is One – we do not confess three Gods, but one God in three persons...the three Persons do not share the one divinity among themselves but each of them is God whole and entire.”
Thus, St. Augustine teaches us that “the Father is not the Son nor the Holy Spirit; the Holy Spirit is not the Father nor the Son: but the Father is only Father, the Son is only Son, and the Holy Spirit is only Holy Spirit. To all three belong the same eternity, the same unchangeableness, the same majesty, the same power.”
If you are still confused, do not worry; continue to pray to the Father through the Son in the power of the Holy Spirit. All will be revealed when you enter Paradise and gaze into the eternal face of God.
Sr. Rosaleen Shaw, OP
 Catechism of the Catholic Church #234
 Dei Filius 4, DS 3015, Ibid., #237
 Gen. 1:26
 Deut. 6:4-5
 Catechism of the Catholic Church #253
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