The Trinity at the Transfiguration.
At the Transfiguration, the Trinity is again revealed:
 Now about eight days after these sayings he took with him Peter and John and James, and went up on the mountain to pray.  And as he was praying, the appearance of his countenance was altered, and his raiment became dazzling white.  And behold, two men talked with him, Moses and Eli’jah,  who appeared in glory and spoke of his departure, which he was to accomplish at Jerusalem.  Now Peter and those who were with him were heavy with sleep, and when they wakened they saw his glory and the two men who stood with him.  And as the men were parting from him, Peter said to Jesus, “Master, it is well that we are here; let us make three booths, one for you and one for Moses and one for Eli’jah” — not knowing what he said.  As he said this, a cloud came and overshadowed them; and they were afraid as they entered the cloud.  And a voice came out of the cloud, saying, “This is my Son, my Chosen; listen to him!”  And when the voice had spoken, Jesus was found alone. And they kept silence and told no one in those days anything of what they had seen.
God manifests Himself to the disciples at the Trinity :
- The Father’s voice is heard: “This is my Son, my Chosen; listen to him!”
- The Son is Transfigured.
- The Holy Spirit, in the form of the Glory Cloud, appears.
- In the Baptism, the Trinity is also apparent when Christ rises out of the water of the Jordan, the voice of God the Father is heard, the the Spirit descends like a dove (Luke 3:21-22).
The Trinity are the Three Persons of God who have the One Divine Nature (CCC 232-267). It is in the Trinity that Man is able to get a brief glimpse of the mysterious, the Perfect Love and communal relationship that God lives.
Many of us lose sight of the beauty of the Trinity and the importance of the Trinity to our existence and faith life.
Pray that we might embrace the mysteries of the Trinity and seek to draw upon the Trinity in our faith lives.