There is no limit or measure to this essentially divine forgiveness, 146 whether one speaks of "sins" as in Luke ( ⇒ 11:4), "debts" as in Matthew ( ⇒ 6:12). We are always debtors: "Owe no one anything, except to Love one another." 147 The Communion of the Holy Trinity is the source and criterion of truth in every relation ship. It is lived out in prayer, above all in the Eucharist. 148

This perfect life with the Most Holy Trinity - this Communion of life and Love with the Trinity, with the Virgin Mary, the angels and all the Blessed - is called "heaven." Heaven is the ultimate end and fulfillment of the deepest human longings, the state of supreme, definitive happiness.

We firmly Believe, and hence we hope that, just as Christ is truly risen from the dead and lives for ever, so after death the righteous will live for ever with the risen Christ and he will raise them up on the last day. 532 Our resurrection, like his own, will be the work of the Most Holy Trinity:

After speaking of the Church, her origin, mission, and destiny, we can find no better way to conclude than by looking to Mary. In her we contemplate what the Church already is in her Mystery on her own "pilgrimage of Faith," and what she will be in the homeland at the end of her journey. There, "in the Glory of the Most Holy and Undivided Trinity," "in the Communion of all the saints," 516 The Church is awaited by the one she venerates as Mother of her Lord and as her own mother.

In the one family of God. "For if we continue to Love one another and to join in praising the Most Holy Trinity - all of us who are Sons of God and form one family in Christ - we will be Faithful to the deepest vocation of the Church." 499

The origin and purpose of mission. the Lord's missionary mandate is ultimately grounded in the eternal Love of the Most Holy Trinity: "The Church on earth is by her nature missionary since, according to the plan of the Father, she has as her origin the mission of the Son and the Holy Spirit." 341 The ultimate purpose of mission is none other than to make men Share in the Communion between the Father and the Son in their Spirit of love. 342

The Church is one because of her source: "the highest exemplar and source of this Mystery is the Unity, in the Trinity of PerSons, of one God, the Father and the Son in the Holy Spirit." 259 The Church is one because of her founder: for "the Word made flesh, the prince of peace, reconciled all men to God by the cross, . . . restoring the unity of all in one people and one body." 260 The Church is one because of her "soul": "It is the Holy Spirit, dwelling in those who Believe and pervading and ruling over the entire Church, who brings about that wonderful Communion of the Faithful and joins them together so intimately in Christ that he is the principle of the Church's unity." 261 Unity is of the essence of the Church:

We begin our investigation of the Church's Mystery by meditating on her origin in the Holy Trinity's plan and her progressive realization in history.

Thus the Church's mission is not an addition to that of Christ and the Holy Spirit, but is its sacrament: in her whole being and in all her members, the Church is sent to announce, bear witness, make present, and spread the Mystery of the Communion of the Holy Trinity (the topic of the next article):

He, then, gives us the "pledge" or "first fruits" of our inheritance: the very life of the Holy Trinity, which is to Love as "God (has) loved us." 127 This love (the "charity" of 1 Cor 13) is the source of the new life in Christ, made possible because we have received "power" from the Holy Spirit. 128

On that day, the Holy Trinity is fully Revealed. Since that day, the Kingdom announced by Christ has been open to those who Believe in him: in the humility of the flesh and in Faith, they already Share in the Communion of the Holy Trinity. By his coming, which never ceases, the Holy Spirit causes the world to enter into the "last days," the time of the Church, the Kingdom already inherited though not yet consummated.

The One whom the Father has sent into our hearts, the Spirit of his Son, is truly God. 10 Consubstantial with the Father and the Son, the Spirit is inseparable from them, in both the inner life of the Trinity and his gift of Love for the world. In adoring the Holy Trinity, life-giving, consubstantial, and indivisible, the Church's Faith also professes the distinction of persons. When the Father sends his Word, he always sends his Breath. In their joint mission, the Son and the Holy Spirit are distinct but inseparable. To be sure, it is Christ who is seen, the visible image of the invisible God, but it is the Spirit who reveals him.

To Believe in the Holy Spirit is to profess that the Holy Spirit is one of the perSons of the Holy Trinity, consubstantial with the Father and the Son: "with the Father and the Son he is worshipped and glorified." 6 For this reason, the divine Mystery of the Holy Spirit was already treated in the context of Trinitarian "theology." Here, however, we have to do with the Holy Spirit only in the divine "economy."

In the Symbol of the Faith the Church confesses the Mystery of the Holy Trinity and of the plan of God's "good pleasure" for all Creation: the Father accomplishes the "mystery of his will" by giving his beLoved Son and his Holy Spirit for the salvation of the world and for the Glory of his name. 1

The Holy Spirit's transforming power in the liturgy hastens the coming of the kingdom and the consummation of the Mystery of salvation. While we wait in hope he causes us really to anticipate the fullness of Communion with the Holy Trinity. Sent by the Father who hears the epiclesis of the Church, the Spirit gives life to those who accept him and is, even now, the "guarantee" of their inheritance. 25

In every liturgical action the Holy Spirit is sent in order to bring us into Communion with Christ and so to form his Body. the Holy Spirit is like the sap of the Father's vine which bears fruit on its branches. 26 The most intimate cooperation of the Holy Spirit and the Church is achieved in the liturgy. the Spirit who is the Spirit of communion, abides indefectibly in the Church. For this reaSon the Church is the great sacrament of divine communion which gathers God's scattered children together. Communion with the Holy Trinity and fraternal communion are inseparably the fruit of the Spirit in the liturgy. 27

When we say "Our" Father, we are invoking the new covenant in Jesus Christ, Communion with the Holy Trinity, and the divine Love which spreads through the Church to encompass the world.

When we pray to "our" Father, we perSonally address the Father of our Lord Jesus Christ. By doing so we do not divide the Godhead, since the Father is its "source and origin," but rather confess that the Son is eternally begotten by him and the Holy Spirit proceeds from him. We are not confusing the persons, for we confess that our Communion is with the Father and his Son, Jesus Christ, in their one Holy Spirit. the Holy Trinity is consubstantial and indivisible. When we pray to the Father, we adore and glorify him together with the Son and the Holy Spirit.

Contemplative prayer is the simplest expression of the Mystery of prayer. It is a gift, a grace; it can be accepted only in humility and poverty. Contemplative prayer is a covenant relationship established by God within our hearts. 9 Contemplative prayer is a Communion in which the Holy Trinity conforms man, the image of God, "to his likeness."

In the sacramental liturgy of the Church, the mission of Christ and of the Holy Spirit proclaims, makes present, and communicates the Mystery of salvation, which is continued in the heart that prays. the spiritual writers sometimes compare the heart to an altar. Prayer internalizes and assimilates the liturgy during and after its celebration. Even when it is lived out "in secret," 6 prayer is always prayer of the Church; it is a Communion with the Holy Trinity. 7

In the New Covenant, prayer is the living relationship of the children of God with their Father who is good beyond measure, with his Son Jesus Christ and with the Holy Spirit. The grace of the Kingdom is "the union of the entire holy and royal Trinity . . . with the whole human spirit." 12 Thus, the life of prayer is the habit of being in the presence of the thrice-holy God and in Communion with him. This communion of life is always possible because, through Baptism, we have already been united with Christ. 13 Prayer is Christian insofar as it is communion with Christ and extends throughout the Church, which is his Body. Its dimensions are those of Christ's Love. 14

Spiritual progress tends toward ever more intimate union with Christ. This union is called "mystical" because it participates in the Mystery of Christ through the sacraments - "the holy mysteries" - and, in him, in the mystery of the Holy Trinity. God calls us all to this intimate union with him, even if the special graces or extraordinary signs of this mystical life are granted only to some for the sake of manifesting the gratuitous gift given to all.

The human virtues are rooted in the theological virtues, which adapt man's faculties for participation in the divine nature: 76 for the theological virtues relate directly to God. They dispose Christians to live in a relationship with the Holy Trinity. They have the One and Triune God for their origin, motive, and object.

The Most Holy Trinity gives the baptized sanctifying grace, the grace of justification: - enabling them to Believe in God, to hope in him, and to Love him through the theological virtues; - giving them the power to live and act under the prompting of the Holy Spirit through the gifts of the Holy Spirit; - allowing them to grow in goodness through the moral virtues. Thus the whole organism of the Christian's supernatural life has its roots in Baptism.

In the Latin Church this triple infusion is accompanied by the minister's words: "N., I baptize you in the name of the Father, and of the Son, and of the Holy Spirit." In the Eastern liturgies the catechumen turns toward the East and the priest says: "The servant of God, N., is baptized in the name of the Father, and of the Son, and of the Holy Spirit." At the invocation of each person of the Most Holy Trinity, the priest immerses the candidate in the water and raises him up again.

The essential rite of the sacrament follows: Baptism properly speaking. It signifies and actually brings about death to sin and entry into the life of the Most Holy Trinity through configuration to the Paschal Mystery of Christ. Baptism is performed in the most expressive way by triple immersion in the baptismal water. However, from ancient times it has also been able to be conferred by pouring the water three times over the candidate's head.

Through his grace, the Holy Spirit is the first to awaken Faith in us and to communicate to us the new life, which is to "know the Father and the one whom he has sent, Jesus Christ." 4 But the Spirit is the last of the perSons of the Holy Trinity to be Revealed. St. Gregory of Nazianzus, the Theologian, explains this progression in terms of the pedagogy of divine "condescension":

Christ's Resurrection is an object of Faith in that it is a transcendent intervention of God himself in Creation and history. In it the three divine perSons act together as one, and manifest their own proper characteristics. the Father's power "raised up" Christ his Son and by doing so perfectly introduced his Son's humanity, including his body, into the Trinity. Jesus is conclusively Revealed as "Son of God in power according to the Spirit of holiness by his Resurrection from the dead". 514 St. Paul insists on the manifestation of God's power 515 through the working of the Spirit who gave life to Jesus' dead humanity and called it to the glorious state of Lordship.

The Trinity is One. We do not confess three Gods, but one God in three perSons, the "consubstantial Trinity". 83 The divine persons do not Share the one divinity among themselves but each of them is God whole and entire: "The Father is that which the Son is, the Son that which the Father is, the Father and the Son that which the Holy Spirit is, i.e. by nature one God." 84 In the words of the Fourth Lateran Council (1215), "Each of the persons is that supreme reality, viz., the divine substance, essence or nature." 85

In order to articulate the dogma of the Trinity, the Church had to develop her own terminology with the help of certain notions of philosophical origin: "substance", "perSon" or "hypostasis", "relation" and so on. In doing this, she did not submit the Faith to human wisdom, but gave a new and unprecedented meaning to these terms, which from then on would be used to signify an ineffable Mystery, "infinitely beyond all that we can humanly understand". 82

From the beginning, the Revealed truth of the Holy Trinity has been at the very root of the Church's living Faith, principally by means of Baptism. It finds its expression in the rule of baptismal faith, formulated in the preaching, catechesis and prayer of the Church. Such formulations are already found in the apostolic writings, such as this salutation taken up in the Eucharistic liturgy: "The grace of the Lord Jesus Christ and the Love of God and the fellowship of the Holy Spirit be with you all." 81

The apostolic Faith concerning the Spirit was confessed by the second ecumenical council at Constantinople (381): "We Believe in the Holy Spirit, the Lord and giver of life, who proceeds from the Father." 71 By this confession, the Church recognizes the Father as "the source and origin of the whole divinity". 72 But the eternal origin of the Spirit is not unconnected with the Son's origin: "The Holy Spirit, the third person of the Trinity, is God, one and equal with the Father and the Son, of the same substance and also of the same nature. . . Yet he is not called the Spirit of the Father alone,. . . but the Spirit of both the Father and the Son." 73 The Creed of the Church from the Council of Constantinople confesses: "With the Father and the Son, he is worshipped and glorified." 74

The eternal origin of the Holy Spirit is Revealed in his mission in time. the Spirit is sent to the apostles and to the Church both by the Father in the name of the Son, and by the Son in person, once he had returned to the Father. 69 The sending of the person of the Spirit after Jesus' glorification 70 reveals in its fullness the Mystery of the Holy Trinity.

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 Fathers of the Church distinguish between theology (theologia) and economy (oikonomia). "Theology" refers to the Mystery of God's inmost life within the Blessed Trinity and "economy" to all the works by which God reveals himself and communicates his life. Through the oikonomia the theologia is Revealed to us; but conversely, the theologia illuminates the whole oikonomia. God's works reveal who he is in himself; the mystery of his inmost being enlightens our understanding of all his works. So it is, analogously, among human perSons. A person discloses himself in his actions, and the better we know a person, the better we understand his actions.

This paragraph expounds briefly (I) how the Mystery of the Blessed Trinity was Revealed, (II) how the Church has articulated the doctrine of the Faith regarding this mystery, and (III) how, by the divine missions of the Son and the Holy Spirit, God the Father fulfils the "plan of his loving goodness" of Creation, redemption and sanctification.

The Mystery of the Most Holy Trinity is the central mystery of Christian Faith and life. It is the mystery of God in himself. It is therefore the source of all the other mysteries of faith, the light that enlightens them. It is the most fundamental and essential teaching in the "hierarchy of the truths of faith". 56 The whole history of salvation is identical with the history of the way and the means by which the one true God, Father, Son and Holy Spirit, reveals himself to men "and reconciles and unites with himself those who turn away from sin". 57

Christians are baptized in the name of the Father and of the Son and of the Holy Spirit: not in their names, 55 for there is only one God, the almighty Father, his only Son and the Holy Spirit: the Most Holy Trinity.

Christians are baptized "in the name of the Father and of the Son and of the Holy Spirit" 53 Before receiving the sacrament, they respond to a three-part question when asked to confess the Father, the Son and the Spirit: "I do." "The Faith of all Christians rests on the Trinity." 54

Our profession of Faith begins with God, for God is the First and the Last, 1 The beginning and the end of everything. the Credo begins with God the Father, for the Father is the first divine perSon of the Most Holy Trinity; our Creed begins with the Creation of heaven and earth, for creation is the beginning and the foundation of all God's works.

St. Gregory of Nazianzus, also called "the Theologian", entrusts this summary of Trinitarian Faith to the catechumens of Constantinople: Above all guard for me this great deposit of faith for which I live and fight, which I want to take with me as a companion, and which makes me bear all evils and despise all pleasures: I mean the profession of faith in the Father and the Son and the Holy Spirit. I entrust it to you today. By it I am soon going to plunge you into water and raise you up from it. I give it to you as the companion and patron of your whole life. I give you but one divinity and power, existing one in three, and containing the three in a distinct way. Divinity without disparity of substance or nature, without superior degree that raises up or inferior degree that casts down. . . the infinite co-naturality of three infinites. Each person considered in himself is entirely God. . . the three considered together. . . I have not even begun to think of Unity when the Trinity bathes me in its splendour. I have not even begun to think of the Trinity when unity grasps me. . 92

"O Blessed light, O Trinity and first Unity!" 93 God is eternal blessedness, undying life, unfading light. God is Love: Father, Son and Holy Spirit. God freely wills to communicate the Glory of his blessed life. Such is the "plan of his loving kindness", conceived by the Father before the foundation of the world, in his beloved Son: "He destined us in love to be his sons" and "to be conformed to the image of his Son", through "the spirit of sonship". 94 This plan is a "grace [which] was given to us in Christ Jesus before the ages began", stemming immediately from Trinitarian love. 95 It unfolds in the work of Creation, the whole history of salvation after the fall, and the missions of the Son and the Spirit, which are continued in the mission of the Church. 96

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.

For a moment Jesus discloses his divine Glory, confirming Peter's confession. He also reveals that he will have to go by the way of the cross at Jerusalem in order to "enter into his glory". 295 Moses and Elijah had seen God's glory on the Mountain; the Law and the Prophets had announced the Messiah's sufferings. 296 Christ's Passion is the will of the Father: the Son acts as God's servant; 297 The cloud indicates the presence of the Holy Spirit. "The whole Trinity appeared: the Father in the voice; the Son in the man; the Spirit in the shining cloud." 298

Called in the Gospels "the mother of Jesus", Mary is acclaimed by Elizabeth, at the prompting of the Spirit and even before the birth of her Son, as "the mother of my Lord". 144 In fact, the One whom she conceived as man by the Holy Spirit, who truly became her Son according to the flesh, was none other than the Father's eternal Son, the second person of the Holy Trinity. Hence the Church confesses that Mary is truly "Mother of God" (Theotokos). 145

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 Church thus confesses that Jesus is inseparably true God and true man. He is truly the Son of God who, without ceasing to be God and Lord, became a man and our brother: "What he was, he remained and what he was not, he assumed", sings the Roman Liturgy. 95 and the liturgy of St. John Chrysostom proclaims and sings: "O only-begotten Son and Word of God, immortal being, you who deigned for our salvation to become incarnate of the holy Mother of God and ever-virgin Mary, you who without change became man and were crucified, O Christ our God, you who by your death have crushed death, you who are one of the Holy Trinity, glorified with the Father and the Holy Spirit, save us!" 96

After the Council of Chalcedon, some made of Christ's human nature a kind of perSonal subject. Against them, the fifth ecumenical council, at Constantinople in 553, confessed that "there is but one hypostasis [or person], which is our Lord Jesus Christ, one of the Trinity." 93 Thus everything in Christ's human nature is to be attributed to his divine person as its proper subject, not only his miracles but also his sufferings and even his death: "He who was crucified in the flesh, our Lord Jesus Christ, is true God, Lord of Glory, and one of the Holy Trinity." 94

"At the heart of catechesis we find, in essence, a PerSon, the Person of Jesus of Nazareth, the only Son from the Father. . .who suffered and died for us and who now, after rising, is living with us forever." 13 To catechize is "to reveal in the Person of Christ the whole of God's eternal design reaching fulfilment in that Person. It is to seek to understand the meaning of Christ's actions and words and of the signs worked by him." 14 Catechesis aims at putting "people . . . in Communion . . . with Jesus Christ: only he can lead us to the Love of the Father in the Spirit and make us Share in the life of the Holy Trinity." 15

The Old Testament suggests and the New Covenant reveals the creative action of the Son and the Spirit, 132 inseparably one with that of the Father. This creative co-operation is clearly affirmed in the Church's rule of Faith: "There exists but one God. . . he is the Father, God, the Creator, the author, the giver of order. He made all things by himself, that is, by his Word and by his Wisdom", "by the Son and the Spirit" who, so to speak, are "his hands". 133 Creation is the common work of the Holy Trinity.

The ultimate end of the whole divine economy is the entry of God's creatures into the perfect Unity of the Blessed Trinity. 100 But even now we are called to be a dwelling for the Most Holy Trinity: "If a man Loves me", says the Lord, "he will keep my word, and my Father will love him, and we will come to him, and make our home with him": 101

The first "profession of Faith" is made during Baptism. the symbol of faith is first and foremost the baptismal creed. Since Baptism is given "in the name of the Father and of the Son and of the Holy Spirit", 3 The truths of faith professed during Baptism are articulated in terms of their reference to the three persons of the Holy Trinity.

The divine perSons are really distinct from one another. "God is one but not solitary." 86 "Father", "Son", "Holy Spirit" are not simply names designating modalities of the divine being, for they are really distinct from one another: "He is not the Father who is the Son, nor is the Son he who is the Father, nor is the Holy Spirit he who is the Father or the Son." 87 They are distinct from one another in their relations of origin: "It is the Father who generates, the Son who is begotten, and the Holy Spirit who proceeds." 88 The divine Unity is Triune.

The divine perSons are relative to one another. Because it does not divide the divine Unity, the real distinction of the persons from one another resides solely in the relationships which relate them to one another: "In the relational names of the persons the Father is related to the Son, the Son to the Father, and the Holy Spirit to both. While they are called three persons in view of their relations, we Believe in one nature or substance." 89 Indeed "everything (in them) is one where there is no opposition of relationship." 90 "Because of that unity the Father is wholly in the Son and wholly in the Holy Spirit; the Son is wholly in the Father and wholly in the Holy Spirit; the Holy Spirit is wholly in the Father and wholly in the Son." 91