In the New Testament, the mystery of the Holy Trinity is revealed through the Person, words, and actions of Jesus Christ. God revealed this mystery to us because He wants us to know Him as He is, so that we might love Him more in return for His boundless love for us.

Jesus revealed Himself as the second Person of the Holy Trinity, the eternal and divine Son of God.

Jesus revealed the Father by calling Him by that name. When Jesus drove the money changers from the temple, He said, “You shall not make my Father’s house a house of trade” (John 2:16). He said to His disciples, “By this my Father is glorified; that you bear much fruit, and so prove to be my disciples. As the Father …

Jesus revealed God the Holy Spirit as the Third Divine Person of the Holy Trinity Whom He and the Father would send to His Church to teach, guide and strengthen it. Jesus taught that God the Holy Spirit was the equal of Himself and the Father. At the Last Supper Jesus told the Apostles: “But when the Counselor comes, whom …

The mystery of the Holy Trinity is that there is in the one, true God only one divine substance, yet three divine Persons: God the Father, God the Son, and God the Holy Spirit. The Trinity is called a mystery of faith because it is a truth that cannot be known unless it is revealed by God, and it is …

We believe in the mystery of the Holy Trinity because God revealed it; He is all-wise and all-truthful. To better understand, as best we can, the mystery of the Holy Trinity, we must await God’s unveiling of Himself in Heaven.