The Trinity is a Mystery of Faith in the strict sense, one of the "mysteries that are hidden in God, which can never be known unless they are revealed by God". 58 To be sure, God has left traces of his Trinitarian being in his work of creation and in his Revelation throughout the Old Testament. But his inmost Being as Holy Trinity is a mystery that is inaccessible to reaSon alone or even to Israel's faith before the Incarnation of God's Son and the sending of the Holy Spirit.

The entire mission of the Son and the Holy Spirit, in the fullness of time, is contained in this: that the Son is the one anointed by the Father's Spirit since his Incarnation - Jesus is the Christ, the Messiah. Everything in the second chapter of the Creed is to be read in this light. Christ's whole work is in fact a joint mission of the Son and the Holy Spirit. Here, we shall mention only what has to do with Jesus' promise of the Holy Spirit and the gift of him by the glorified Lord.

Jesus is Christ, "anointed," because the Spirit is his anointing, and everything that occurs from the Incarnation on derives from this fullness. 11 When Christ is finally glorified, 12 he can in turn send the Spirit from his place with the Father to those who believe in him: he communicates to them his glory, 13 that is, the Holy Spirit who glorifies him. 14 From that time on, this joint mission will be manifested in the children adopted by the Father in the Body of his Son: the mission of the Spirit of adoption is to unite them to Christ and make them live in him:

The Holy Spirit is at work with the Father and the Son from the beginning to the completion of the plan for our Salvation. But in these "end times," ushered in by the Son's redeeming Incarnation, the Spirit is revealed and given, recognized and welcomed as a person. Now can this divine plan, accomplished in Christ, the firstborn and head of the new creation, be embodied in mankind by the outpouring of the Spirit: as the Church, the communion of saints, the forgiveness of sins, the Resurrection of the body, and the life everlasting.

This final stage stays closely linked to the first, that is, to his descent from heaven in the Incarnation. Only the one who "came from the Father" can return to the Father: Christ Jesus. 537 "No one has ascended into heaven but he who descended from heaven, the Son of man." 538 Left to its own natural powers humanity does not have access to the "Father's house", to God's life and happiness. 539 Only Christ can open to man such access that we, his members, might have confidence that we too shall go where he, our Head and our Source, has preceded us. 540

The truth of Jesus' divinity is confirmed by his Resurrection. He had said: "When you have lifted up the Son of man, then you will know that I am he." 523 The Resurrection of the crucified one shows that he was truly "I AM", the Son of God and God himself. So St. Paul could declare to the Jews: "What God promised to the Fathers, this he has fulfilled to us their children by raising Jesus; as also it is written in the second psalm, 'You are my Son, today I have begotten you.'" 524 Christ's Resurrection is closely linked to the Incarnation of God's Son, and is its fulfilment in accordance with God's eternal plan.

The desire to embrace his Father's plan of redeeming love inspired Jesus' whole life, 418 for his redemptive passion was the very reaSon for his Incarnation. and so he asked, "and what shall I say? 'Father, save me from this hour'? No, for this purpose I have come to this hour." 419 and again, "Shall I not drink the cup which the Father has given me?" 420 From the cross, just before "It is finished", he said, "I thirst." 421

The Son of God, who came down "from heaven, not to do (his) own will, but the will of him who sent (him)", 413 said on coming into the world, "Lo, I have come to do your will, O God." "and by that will we have been sanctified through the offering of the body of Jesus Christ once for all." 414 From the first moment of his Incarnation the Son embraces the Father's plan of divine Salvation in his redemptive mission: "My food is to do the will of him who sent me, and to accomplish his work." 415 The sacrifice of Jesus "for the sins of the whole world" 416 expresses his loving communion with the Father. "The Father loves me, because I lay down my life", said the Lord, "(for) I do as the Father has commanded me, so that the world may know that I love the Father." 417

Death is the end of man's earthly pilgrimage, of the time of grace and mercy which God offers him so as to work out his earthly life in keeping with the divine plan, and to decide his ultimate destiny. When "the single course of our earthly life" is completed, 584 we shall not return to other earthly lives: "It is appointed for men to die once." 585 There is no "reIncarnation" after death.

"[Address] one another in psalms and hymns and spiritual Songs, singing and making melody to the Lord with all your heart." 124 Like the inspired writers of the New Testament, the first Christian communities read the Book of Psalms in a new way, singing in it the Mystery of Christ. In the newness of the Spirit, they also composed hymns and canticles in the light of the unheard - of event that God accomplished in his Son: his Incarnation, his death which conquered death, his Resurrection, and Ascension to the right hand of the Father. 125 Doxology, the praise of God, arises from this "marvelous work" of the whole economy of Salvation. 126

Mary's prayer is revealed to us at the dawning of the fullness of time. Before the Incarnation of the Son of God, and before the outpouring of the Holy Spirit, her prayer cooperates in a unique way with the Father's plan of loving kindness: at the Annunciation, for Christ's conception; at Pentecost, for the formation of the Church, his Body. 88 In the Faith of his humble handmaid, the Gift of God found the acceptance he had awaited from the beginning of time. She whom the Almighty made "full of grace" responds by offering her whole being: "Behold I am the handmaid of the Lord; let it be [done] to me according to your word." "Fiat": this is Christian prayer: to be wholly God's, because he is wholly ours.

Jesus often draws apart to pray in solitude, on a mountain, preferably at night. 46 He includes all men in his prayer, for he has taken on humanity in his Incarnation, and he offers them to the Father when he offers himself. Jesus, the Word who has become flesh, shares by his human prayer in all that "his brethren" experience; he sympathizes with their weaknesses in order to free them. 47 It was for this that the Father sent him. His words and works are the visible manifestation of his prayer in secret.

The Mystery of Christ, his Incarnation and Passover, which we celebrate in the Eucharist especially at the Sunday assembly, permeates and transfigures the time of each day, through the celebration of the Liturgy of the Hours, "the divine office." 46 This celebration, Faithful to the apostolic exhortations to "pray constantly," is "so devised that the whole course of the day and night is made holy by the praise of God." 47 In this "public prayer of the Church," 48 The faithful (clergy, religious, and lay people) exercise the royal priesthood of the baptized. Celebrated in "the form approved" by the Church, the Liturgy of the Hours "is truly the voice of the Bride herself addressed to her Bridegroom. It is the very prayer which Christ himself together with his Body addresses to the Father. 49

In the liturgical year the various aspects of the one Paschal Mystery unfold. This is also the case with the cycle of feasts surrounding the mystery of the Incarnation (Annunciation, Christmas, Epiphany). They commemorate the beginning of our Salvation and communicate to us the first fruits of the Paschal mystery.

The Sacred Image, the liturgical icon, principally represents Christ. It cannot represent the invisible and incomprehensible God, but the Incarnation of the Son of God has ushered in a new "economy" of images:

The Epiphany is the manifestation of Jesus as Messiah of Israel, Son of God and Saviour of the world. the great feast of Epiphany celebrates the adoration of Jesus by the wise men (magi) from the East, together with his baptism in the Jordan and the wedding feast at Cana in Galilee. 212 In the magi, representatives of the neighbouring pagan religions, the Gospel sees the first-fruits of the nations, who welcome the good news of Salvation through the Incarnation. the magi's coming to Jerusalem in order to pay homage to the king of the Jews shows that they seek in Israel, in the messianic light of the star of David, the one who will be king of the nations. 213 Their coming means that pagans can discover Jesus and worship him as Son of God and Saviour of the world only by turning towards the Jews and receiving from them the messianic promise as contained in the Old Testament. 214 The Epiphany shows that "the full number of the nations" now takes its "place in the family of the patriarchs", and acquires Israelitica dignitas 215 (is made "worthy of the heritage of Israel").

Christ enables us to live in him all that he himself lived, and he lives it in us. "By his Incarnation, he, the Son of God, has in a certain way united himself with each man." 193 We are called only to become one with him, for he enables us as the members of his Body to share in what he lived for us in his flesh as our model:

Taking up St. John's expression, "The Word became flesh", 82 The Church calls "Incarnation" the fact that the Son of God assumed a human nature in order to accomplish our Salvation in it. In a hymn cited by St. Paul, the Church sings the Mystery of the Incarnation:

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, 23 so that "there is no other name under heaven given among men by which we must be saved." 24

From this loving knowledge of Christ springs the desire to proclaim him, to "evangelize", and to lead others to the "yes" of Faith in Jesus Christ. But at the same time the need to know this faith better makes itself felt. To this end, following the order of the Creed, Jesus' principal titles - "Christ", "Son of God", and "Lord" (article 2) - will be presented. the Creed next confesses the chief mysteries of his life - those of his Incarnation (article 3), Paschal Mystery (articles 4 and 5) and glorification (articles 6 and 7).

From the Incarnation to the Ascension, the life of the Word incarnate is surrounded by the adoration and service of angels. When God "brings the firstborn into the world, he says: 'Let all God's angels worship him.'" 196 Their Song of praise at the birth of Christ has not ceased resounding in the Church's praise: "Glory to God in the highest!" 197 They protect Jesus in his infancy, serve him in the desert, strengthen him in his agony in the garden, when he could have been saved by them from the hands of his enemies as Israel had been. 198 Again, it is the angels who "evangelize" by proclaiming the Good News of Christ's Incarnation and Resurrection. 199 They will be present at Christ's return, which they will announce, to serve at his judgement. 200

If God the Father almighty, the Creator of the ordered and good world, cares for all his creatures, why does evil exist? To this question, as pressing as it is unavoidable and as painful as it is mysterious, no quick answer will suffice. Only Christian Faith as a whole constitutes the answer to this question: the goodness of creation, the drama of sin and the patient love of God who comes to meet man by his covenants, the redemptive Incarnation of his Son, his gift of the Spirit, his gathering of the Church, the power of the sacraments and his call to a blessed life to which free creatures are invited to consent in advance, but from which, by a terrible Mystery, they can also turn away in advance. There is not a single aspect of the Christian message that is not in part an answer to the question of evil.

The whole divine economy is the common work of the three divine perSons. For as the Trinity has only one and the same natures so too does it have only one and the same operation: "The Father, the Son and the Holy Spirit are not three principles of creation but one principle." 97 However, each divine person performs the common work according to his unique personal property. Thus the Church confesses, following the New Testament, "one God and Father from whom all things are, and one Lord Jesus Christ, through whom all things are, and one Holy Spirit in whom all things are". 98 It is above all the divine missions of the Son's Incarnation and the gift of the Holy Spirit that show forth the properties of the divine persons.

Belief in the true Incarnation of the Son of God is the distinctive sign of Christian Faith: "By this you know the Spirit of God: every spirit which confesses that Jesus Christ has come in the flesh is of God." 85 Such is the joyous conviction of the Church from her beginning whenever she sings "the Mystery of our religion": "He was manifested in the flesh." 86

The unique and altogether singular event of the Incarnation of the Son of God does not mean that Jesus Christ is part God and part man, nor does it imply that he is the result of a confused mixture of the divine and the human. He became truly man while remaining truly God. Jesus Christ is True God and True Man. During the first centuries, the Church had to defend and clarify this truth of Faith against the heresies that falsified it.

All Christ's riches "are for every individual and are everybody's property." 187 Christ did not live his life for himself but for us, from his Incarnation "for us men and for our Salvation" to his death "for our sins" and Resurrection "for our justification". 188 He is still "our advocate with the Father", who "always lives to make intercession" for us. 189 He remains ever "in the presence of God on our behalf, bringing before him all that he lived and suffered for us." 190

Christ's whole life is a Mystery of redemption. Redemption comes to us above all through the blood of his cross, 179 but this mystery is at work throughout Christ's entire life: -already in his Incarnation through which by becoming poor he enriches us with his poverty; 180 - in his hidden life which by his submission atones for our disobedience; 181 - in his word which purifies its hearers; 182 - in his healings and exorcisms by which "he took our infirmities and bore our diseases"; 183 - and in his Resurrection by which he justifies us. 184

Concerning Christ's life the Creed speaks only about the mysteries of the Incarnation (conception and birth) and Paschal Mystery (passion, crucifixion, death, burial, descent into hell, Resurrection and ascension). It says nothing explicitly about the mysteries of Jesus' hidden or public life, but the articles of Faith concerning his Incarnation and Passover do shed light on the whole of his earthly life. "All that Jesus did and taught, from the beginning until the day when he was taken up to heaven", 171 is to be seen in the light of the mysteries of Christmas and Easter.

Mary's virginity manifests God's absolute initiative in the Incarnation. Jesus has only God as Father. "He was never estranged from the Father because of the human nature which he assumed. . . He is naturally Son of the Father as to his divinity and naturally son of his mother as to his humanity, but properly Son of the Father in both natures." 161

People are sometimes troubled by the silence of St. Mark's Gospel and the New Testament Epistles about Jesus' virginal conception. Some might wonder if we were merely dealing with legends or theological constructs not claiming to be history. To this we must respond: Faith in the virginal conception of Jesus met with the lively opposition, mockery or incomprehension of non-believers, Jews and pagans alike; 151 so it could hardly have been motivated by pagan mythology or by some adaptation to the ideas of the age. the meaning of this event is accessible only to faith, which understands in it the "connection of these mysteries with one another" 152 in the totality of Christ's mysteries, from his Incarnation to his Passover. St. Ignatius of Antioch already bears witness to this connection: "Mary's virginity and giving birth, and even the Lord's death escaped the notice of the prince of this world: these three mysteries worthy of proclamation were accomplished in God's silence." 153

Because "human nature was assumed, not absorbed", 97 in the mysterious union of the Incarnation, the Church was led over the course of centuries to confess the full reality of Christ's human soul, with its operations of intellect and will, and of his human body. In parallel fashion, she had to recall on each occasion that Christ's human nature belongs, as his own, to the divine perSon of the Son of God, who assumed it. Everything that Christ is and does in this nature derives from "one of the Trinity".

The first heresies denied not so much Christ's divinity as his true humanity (Gnostic Docetism). From apostolic times the Christian Faith has insisted on the true Incarnation of God's Son "come in the flesh". 87 But already in the third century, the Church in a council at Antioch had to affirm against Paul of Samosata that Jesus Christ is Son of God by nature and not by adoption. the first ecumenical council of Nicaea in 325 confessed in its Creed that the Son of God is "begotten, not made, of the same substance (homoousios) as the Father", and condemned Arius, who had affirmed that the Son of God "came to be from things that were not" and that he was "from another substance" than that of the Father. 88

But the one name that contains everything is the one that the Son of God received in his Incarnation: Jesus. the divine name may not be spoken by human lips, but by assuming our humanity the Word of God hands it over to us and we can invoke it: "Jesus," "YHWH saves." 16 The name "Jesus" contains all: God and man and the whole economy of creation and Salvation. To pray "Jesus" is to invoke him and to call him within us. His name is the only one that contains the presence it signifies. Jesus is the Risen One, and whoever invokes the name of Jesus is welcoming the Son of God who loved him and who gave himself up for him. 17