This is my Son, the Beloved
Jesus took with him Peter and James and John and led them up a high mountain where they could be alone by themselves. There in their presence he was transfigured: his clothes became dazzlingly white, whiter than any earthly bleacher could make them. Elijah appeared to them with Moses; and they were talking with Jesus. Then Peter spoke to Jesus: ‘Rabbi,’ he said ‘it is wonderful for us to be here; so let us make three tents, one for you, one for Moses and one for Elijah.’ He did not know what to say; they were so frightened. And a cloud came, covering them in shadow; and there came a voice from the cloud, ‘This is my Son, the Beloved. Listen to him.’ Then suddenly, when they looked round, they saw no one with them any more but only Jesus.
As they came down from the mountain he warned them to tell no one what they had seen, until after the Son of Man had risen from the dead. They observed the warning faithfully, though among themselves they discussed what ‘rising from the dead’ could mean.
The New American Bible
The Catechism of the Catholic Church
436 The word “Christ” comes from the Greek translation of the Hebrew Messiah, which means “anointed”. It became the name proper to Jesus only because he accomplished perfectly the divine mission that “Christ” signifies. In effect, in Israel those consecrated to God for a mission that he gave were anointed in his name. This was the case for kings, for priests and, in rare instances, for prophets. This had to be the case all the more so for the Messiah whom God would send to inaugurate his kingdom definitively. It was necessary that the Messiah be anointed by the Spirit of the Lord at once as king and priest, and also as prophet. Jesus fulfilled the messianic hope of Israel in his threefold office of priest, prophet and king.
437 To the shepherds, the angel announced the birth of Jesus as the Messiah promised to Israel: “To you is born this day in the city of David a Savior, who is Christ the Lord.” From the beginning he was “the one whom the Father consecrated and sent into the world”, conceived as “holy” in Mary’s virginal womb. God called Joseph to “take Mary as your wife, for that which is conceived in her is of the Holy Spirit”, so that Jesus, “who is called Christ”, should be born of Joseph’s spouse into the messianic lineage of David.
438 Jesus’ messianic consecration reveals his divine mission, “for the name ‘Christ’ implies ‘he who anointed’, ‘he who was anointed’ and ‘the very anointing with which he was anointed’. The one who anointed is the Father, the one who was anointed is the Son, and he was anointed with the Spirit who is the anointing.'” His eternal messianic consecration was revealed during the time of his earthly life at the moment of his baptism by John, when “God anointed Jesus of Nazareth with the Holy Spirit and with power”, “that he might be revealed to Israel” as its Messiah. His works and words will manifest him as “the Holy One of God”.
439 Many Jews and even certain Gentiles who shared their hope recognized in Jesus the fundamental attributes of the messianic “Son of David”, promised by God to Israel. Jesus accepted his rightful title of Messiah, though with some reserve because it was understood by some of his contemporaries in too human a sense, as essentially political.
440 Jesus accepted Peter’s profession of faith, which acknowledged him to be the Messiah, by announcing the imminent Passion of the Son of Man. He unveiled the authentic content of his messianic kingship both in the transcendent identity of the Son of Man “who came down from heaven”, and in his redemptive mission as the suffering Servant: “The Son of Man came not to be served but to serve, and to give his life as a ransom for many. Hence the true meaning of his kingship is revealed only when he is raised high on the cross. Only after his Resurrection will Peter be able to proclaim Jesus’ messianic kingship to the People of God: “Let all the house of Israel therefore know assuredly that God has made him both Lord and Christ, this Jesus whom you crucified.”
Sing to the LORD a new song; sing to the LORD, all the earth.
Sing to the LORD, bless his name; announce his salvation day after day.
Tell God’s glory among the nations; among all peoples, God’s marvelous deeds.
For great is the LORD and highly to be praised, to be feared above all gods.
For the gods of the nations all do nothing, but the LORD made the heavens.
Splendor and power go before him; power and grandeur are in his holy place.
Give to the LORD, you families of nations, give to the LORD glory and might;
give to the LORD the glory due his name! Bring gifts and enter his courts;
bow down to the LORD, splendid in holiness. Tremble before God, all the earth;
say among the nations: The LORD is king. The world will surely stand fast, never to be moved. God rules the peoples with fairness.
Let the heavens be glad and the earth rejoice; let the sea and what fills it resound;
let the plains be joyful and all that is in them. Then let all the trees of the forest rejoice
before the LORD who comes, who comes to govern the earth, To govern the world with justice and the peoples with faithfulness.
Source: The New American Bible