Catechism Part 1, Section 2, Chapter 2, Article 2, I-III: Jesus Christ His Only Son (430-445)

I: Jesus (430-435)
Jesus' name means "God Saves," signifying that Jesus will save the people from their sins. In Jesus,God recapitulates all of the history of salvation on behalf of men. The name Jesus signifies that the very name of God is present in the person of his Son,made man for the universal and definitive redemption from sins. It is the divine name that alone  brings salvation, and henceforth all can invoke his name, for Jesus united himself to all men through his Incarnation.  The name Saviour God was invoked only once a year by the high priest in atonement for the sins of Israel, after he had sprinkled the mercy seat in the Holy of Holies with the sacrificial blood. The mercy seat was  the place of Gods presence. In Jesus' humanity, God reconciled the world to himself. Jesus' Resurrection glorifies the name of the Saviour God. for from that time on it is the name of Jesus that fully manifests the supreme power of the name which is above every other name. The evil spirits fear his name; in his name his disciples perform miracles, for the Father grants all they ask in this name. The name of Jesus is at the heart of Christian prayer.  All liturgical prayers conclude with the words " through our Lord Jesus Christ" The Hail Mary reaches its high point in the words " blessed is the fruit of thy womb Jesus." The Eastern prayer of the heart the Jesus prayer says " Lord Jesus Christ, Son of God, have mercy on me, a sinner" Many Christians such as St. Joan of Arc , have died with the one word Jesus on their lips.

II: Christ (436-440)
"Christ" is the Greek for the Hebrew word "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 prophets. 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 three fold office of priest, prophet, and king. To the shepherds, the angel announced the birth of Jesus the Messiah promised to Israel. 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 at the moment of his baptism by John. 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. He unveiled the authentic content of his messianic kingship both in the transcendent identity of the Son of Man and in his redemptive mission as a suffering servant.

III: The Only Son of God (441-445)
In the Old Testament son of God is a title given to angles , the Chosen People, the children of Israel, and their kings. It signifies an adoptive sonship that establishes a relationship of particular intimacy between God and his creature. When the promised Messiah King is called son of God it does not necessarily imply that he was more than human, according to the literal meaning of the texts. Those who called Jesus son of God as the Messiah of Israel perhaps meant nothing more than this. From the beginning this acknowledgement of Christ's divine sonship will be the center of the apostolic faith, first professed by Peter as the Church's foundation. Peter could recognize the transcendent character of the Messiah's divine sonship because Jesus had clearly allowed it to be so understood. Well before this Jesus refereed to himself as the Son who knows the Father, as distinct from the servants God had earlier sent to his people; he is superior even to the angels. He distinguished his sonship from that of his disciples by never saying our Father except to command them to pray. The Gospels report two solemn moments the Baptism and the Transfiguration of Christ, the voice of the Father designates Jesus his beloved Son. After his Resurrection , Jesus divine sonship becomes manifest in the power of his glorified humanity.