Basing itself on the mystery of the incarnate Word, the seventh ecumenical Council at Nicaea (787) justified against the iconoclasts the veneration of icons - of Christ, but also of the Mother of God, the angels, and all the saints. By becoming incarnate, the Son of God introduced a new "economy" of images.

The Church gives the name Purgatory to this final purification of the elect, which is entirely different from the punishment of the damned. 604 The Church formulated her doctrine of Faith on Purgatory especially at the Councils of Florence and Trent. the Tradition of the Church, by reference to certain texts of Scripture, speaks of a cleansing fire: 605

In the Church, "lay members of the Christian Faithful can cooperate in the exercise of this power [of governance] in accord with the norm of law." 449 and so the Church provides for their presence at particular Councils, diocesan synods, pastoral councils; the exercise in solidum of the pastoral care of a parish, collaboration in finance committees, and participation in ecclesiastical tribunals, etc. 450

"The Roman Pontiff, head of the college of bishops, enjoys this infallibility in virtue of his office, when, as supreme pastor and teacher of all the Faithful - who confirms his brethren in the faith he proclaims by a definitive act a doctrine pertaining to faith or morals.... the infallibility promised to the Church is also present in the body of bishops when, together with Peter's successor, they exercise the supreme Magisterium," above all in an Ecumenical Council. 418 When the Church through its supreme Magisterium proposes a doctrine "for belief as being divinely revealed," 419 and as the teaching of Christ, the definitions "must be adhered to with the obedience of faith." 420 This infallibility extends as far as the deposit of divine Revelation itself. 421

Neighboring particular Churches who share the same culture form ecclesiastical provinces or larger groupings called patriarchates or regions. 413 The bishops of these groupings can meet in synods or provincial Councils. "In a like fashion, the episcopal conferences at the present time are in a position to contribute in many and fruitful ways to the concrete realization of the collegiate spirit." 414

"The college of bishops exercises power over the universal Church in a solemn manner in an ecumenical Council." 405 But "there never is an ecumenical council which is not confirmed or at least recognized as such by Peter's successor." 406

Only Faith can recognize that the Church possesses these properties from her divine source. But their historical manifestations are signs that also speak clearly to human reaSon. As the First Vatican Council noted, the "Church herself, with her marvellous propagation, eminent holiness, and inexhaustible fruitfulness in everything good, her catholic unity and invincible stability, is a great and perpetual motive of credibility and an irrefutable witness of her divine mission." 258

"Christ is the light of humanity; and it is, accordingly, the heart-felt desire of this sacred Council, being gathered together in the Holy Spirit, that, by proclaiming his Gospel to every creature, it may bring to all men that light of Christ which shines out visibly from the Church." 135 These words open the Second Vatican Council's Dogmatic Constitution on the Church. By choosing this starting point, the Council demonstrates that the article of Faith about the Church depends entirely on the articles concerning Christ Jesus. the Church has no other light than Christ's; according to a favorite image of the Church Fathers, the Church is like the moon, all its light reflected from the sun.

At the Council of Nicaea in 325, all the Churches agreed that Easter, the Christian Passover, should be celebrated on the Sunday Following the first full moon (14 Nisan) after the vernal equinox. the reform of the Western calendar, called "Gregorian" after Pope Gregory XIII (1582), caused a discrepancy of several days with the Eastern calendar. Today, the Western and Eastern Churches are seeking an agreement in order once again to celebrate the day of the Lord's Resurrection on a common date.

The liturgical Traditions or rites presently in use in the Church are the Latin (principally the Roman rite, but also the rites of certain local churches, such as the Ambrosian rite, or those of certain religious orders) and the Byzantine, Alexandrian or Coptic, Syriac, Armenian, Maronite and Chaldean rites. In "Faithful obedience to tradition, the sacred Council declares that Holy Mother Church holds all lawfully recognized rites to be of equal right and dignity, and that she wishes to preserve them in the future and to foster them in every way." 69

The second Vatican Council restored for the Latin Church "the catechumenate for adults, comprising several distinct steps." 34 The rites for these stages are to be found in the Rite of Christian Initiation of Adults (RCIA). 35 The Council also gives permission that: "In mission countries, in addition to what is furnished by the Christian Tradition, those elements of initiation rites may be admitted which are already in use among some peoples insofar as they can be adapted to the Christian ritual." 36

The Council of Trent teaches that the Ten Commandments are obligatory for Christians and that the

In our own time, in a world often alien and even hostile to Faith, believing families are of primary importance as centers of living, radiant faith. For this reaSon the Second Vatican Council, using an ancient expression, calls the family the Ecclesia domestica. 166 It is in the bosom of the family that parents are "by word and example . . . the first heralds of the faith with regard to their children. They should encourage them in the vocation which is proper to each child, fostering with special care any religious vocation." 167

Since the Second Vatican Council the Latin Church has restored the diaconate "as a proper and permanent rank of the hierarchy," 58 while the Churches of the East had always maintained it. This permanent diaconate, which can be conferred on married men, constitutes an important enrichment for the Church's mission. Indeed it is appropriate and useful that men who carry out a truly diaconal ministry in the Church, whether in its liturgical and pastoral life or whether in its social and charitable works, should "be strengthened by the imposition of hands which has come down from the apostles. They would be more closely bound to the altar and their ministry would be made more fruitful through the sacramental grace of the diaconate." 59

The Second Vatican Council "teaches . . . that the fullness of the sacrament of Holy Orders is conferred by episcopal consecration, that fullness namely which, both in the liturgical Tradition of the Church and the language of the Fathers of the Church, is called the high priesthood, the acme (summa) of the sacred ministry." 36

The Apostolic Constitution Sacram unctionem infirmorum, 126 Following upon the Second Vatican Council, 127 established that henceforth, in the Roman Rite, the following be observed:

It is in keeping with the very meaning of the Eucharist that the Faithful, if they have the required dispositions, receive communion each time they participate in the Mass. 219 As the Second Vatican Council says: "That more perfect form of participation in the Mass whereby the faithful, after the priest's communion, receive the Lord's Body from the same sacrifice, is warmly recommended." 220

The Council of Trent summarizes the Catholic Faith by declaring: "Because Christ our Redeemer said that it was truly his body that he was offering under the species of bread, it has always been the conviction of the Church of God, and this holy Council now declares again, that by the consecration of the bread and wine there takes place a change of the whole substance of the bread into the substance of the body of Christ our Lord and of the whole substance of the wine into the substance of his blood. This change the holy Catholic Church has fittingly and properly called transubstantiation." 204

The Council of Trent emphasizes the unique character of Christ's sacrifice as "the source of eternal salvation" 449 and teaches that "his most holy Passion on the wood of the cross merited justification for us." 450 and the Church venerates his cross as she sings: "Hail, O Cross, our only hope." 451

The historical complexity of Jesus' trial is apparent in the Gospel accounts. the perSonal sin of the participants (Judas, the Sanhedrin, Pilate) is known to God alone. Hence we cannot lay responsibility for the trial on the Jews in Jerusalem as a whole, despite the outcry of a manipulated crowd and the global reproaches contained in the apostles' calls to conversion after Pentecost. 385 Jesus himself, in forgiving them on the cross, and Peter in Following suit, both accept "the ignorance" of the Jews of Jerusalem and even of their leaders. 386 Still less can we extend responsibility to other Jews of different times and places, based merely on the crowd's cry: "His blood be on us and on our children!", a formula for ratifying a judicial sentence. 387 As the Church declared at the Second Vatican Council: . . .

Since the Word became Flesh in assuming a true humanity, Christ's body was finite. 112 Therefore the human face of Jesus can be portrayed; at the seventh ecumenical Council (Nicaea II in 787) the Church recognized its representation in holy images to be legitimate. 113

The Latin Tradition of the Creed confesses that the Spirit "proceeds from the Father and the Son (filioque)". the Council of Florence in 1438 explains: "The Holy Spirit is eternally from Father and Son; He has his nature and subsistence at once (simul) from the Father and the Son. He proceeds eternally from both as from one principle and through one spiration... And, since the Father has through generation given to the only-begotten Son everything that belongs to the Father, except being Father, the Son has also eternally from the Father, from whom he is eternally born, that the Holy Spirit proceeds from the Son." 75

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

Following this Apostolic Tradition, the Church confessed at the first ecumenical Council at Nicaea (325) that the Son is "consubstantial" with the Father, that is, one only God with him. 66 The second ecumenical council, held at Constantinople in 381, kept this expression in its formulation of the Nicene Creed and confessed "the only-begotten Son of God, eternally begotten of the Father, light from light, true God from true God, begotten not made, consubstantial with the Father". 67

The Niceno-Constantinopolitan or Nicene Creed draws its great authority from the fact that it stems from the first two ecumenical Councils (in 325 and 381). It remains common to all the great Churches of both East and West to this day.

Through the centuries many professions or symbols of Faith have been articulated in response to the needs of the different eras: the Creeds of the different Apostolic and ancient Churches, 8 e.g., the Quicumque, also called the Athanasian Creed; 9 The professions of faith of certain Councils, such as Toledo, Lateran, Lyons, Trent; 10 or the symbols of certain popes, e.g., the Fides Damasi 11 or the Credo of the People of God of Paul VI. 12

"I believe" (Apostles' Creed) is the Faith of the Church professed perSonally by each believer, principally during Baptism. "We believe" (Niceno-Constantinopolitan Creed) is the faith of the Church confessed by the bishops assembled in Council or more generally by the liturgical assembly of believers. "I believe" is also the Church, our mother, responding to God by faith as she teaches us to say both "I believe" and "We believe".

This catechism aims at presenting an organic synthesis of the essential and fundamental contents of Catholic doctrine, as regards both Faith and morals, in the light of the Second Vatican Council and the whole of the Church's Tradition. Its principal sources are the Sacred Scriptures, the Fathers of the Church, the liturgy, and the Church's Magisterium. It is intended to serve "as a point of reference for the catechisms or compendia that are composed in the various countries". 15

It is therefore no surprise that catechesis in the Church has again attracted attention in the wake of the Second Vatican Council, which Pope Paul Vl considered the great catechism of modern times. the General Catechetical Directory (1971) the sessions of the Synod of Bishops devoted to evangelization (1974) and catechesis (1977), the Apostolic exhortations Evangelii nuntiandi (1975) and Catechesi tradendae (1979), attest to this. the Extraordinary Synod of Bishops in 1985 asked "that a catechism or compendium of all Catholic doctrine regarding both Faith and morals be composed" 13 The Holy Father, Pope John Paul II, made the Synod's wish his own, acknowledging that "this desire wholly corresponds to a real need of the universal Church and of the particular Churches." 14 He set in motion everything needed to carry out the Synod Fathers' wish.

The affirmation of the filioque does not appear in the Creed confessed in 381 at Constantinople. But Pope St. Leo I, Following an ancient Latin and Alexandrian Tradition, had already confessed it dogmatically in 447, 76 even before Rome, in 451 at the Council of Chalcedon, came to recognize and receive the Symbol of 381. the use of this formula in the Creed was gradually admitted into the Latin liturgy (between the eighth and eleventh centuries). the introduction of the filioque into the Niceno-Constantinopolitan Creed by the Latin liturgy constitutes moreover, even today, a point of disagreement with the Orthodox Churches.

During the first centuries the Church sought to clarify her Trinitarian Faith, both to deepen her own understanding of the faith and to defend it against the errors that were deforming it. This clarification was the work of the early Councils, aided by the theological work of the Church Fathers and sustained by the Christian people's sense of the faith.

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

Similarly, at the sixth ecumenical Council, Constantinople III in 681, the Church confessed that Christ possesses two wills and two natural operations, divine and human. They are not opposed to each other, but co-operate in such a way that the Word made Flesh willed humanly in obedience to his Father all that he had decided divinely with the Father and the Holy Spirit for our salvation. 110 Christ's human will "does not resist or oppose but rather submits to his divine and almighty will." 111

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

The Monophysites affirmed that the human nature had ceased to exist as such in Christ when the divine perSon of God's Son assumed it. Faced with this heresy, the fourth ecumenical Council, at Chalcedon in 451, confessed: Following the holy Fathers, we unanimously teach and confess one and the same Son, our Lord Jesus Christ: the same perfect in divinity and perfect in humanity, the same truly God and truly man, composed of rational soul and body; consubstantial with the Father as to his divinity and consubstantial with us as to his humanity; "like us in all things but sin". He was begotten from the Father before all ages as to his divinity and in these last days, for us and for our salvation, was born as to his humanity of the virgin Mary, the Mother of God. 91

The Nestorian heresy regarded Christ as a human perSon joined to the divine person of God's Son. Opposing this heresy, St. Cyril of Alexandria and the third ecumenical Council, at Ephesus in 431, confessed "that the Word, uniting to himself in his person the Flesh animated by a rational soul, became man." 89 Christ's humanity has no other subject than the divine person of the Son of God, who assumed it and made it his own, from his conception. For this reason the Council of Ephesus proclaimed in 431 that Mary truly became the Mother of God by the human conception of the Son of God in her womb: "Mother of God, not that the nature of the Word or his divinity received the beginning of its existence from the holy Virgin, but that, since the holy body, animated by a rational soul, which the Word of God united to himself according to the hypostasis, was born from her, the Word is said to be born according to the flesh." 90

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

The Church's teaching on the transmission of original sin was articulated more precisely in the fifth century, especially under the impulse of St. Augustine's reflections against Pelagianism, and in the sixteenth century, in opposition to the Protestant Reformation. Pelagius held that man could, by the natural power of free will and without the necessary help of God's grace, lead a morally good life; he thus reduced the influence of Adam's fault to bad example. the first Protestant reformers, on the contrary, taught that original sin has radically perverted man and destroyed his freedom; they identified the sin inherited by each man with the tendency to evil (concupiscentia), which would be insurmountable. the Church pronounced on the meaning of the data of Revelation on original sin especially at the second Council of Orange (529) 296 and at the Council of Trent (1546). 297

The profession of Faith of the Fourth Lateran Council (1215) affirms that God "from the beginning of time made at once (simul) out of nothing both orders of creatures, the spiritual and the corporeal, that is, the angelic and the earthly, and then (deinde) the human creature, who as it were shares in both orders, being composed of spirit and body." 187

Scripture and Tradition never cease to teach and celebrate this fundamental truth: "The world was made for the glory of God." 134 St. Bonaventure explains that God created all things "not to increase his glory, but to show it forth and to communicate it", 135 for God has no other reaSon for creating than his love and goodness: "Creatures came into existence when the key of love opened his hand." 136 The First Vatican Council explains:

"The ministry of catechesis draws ever fresh energy from the Councils. the Council of Trent is a noteworthy example of this. It gave catechesis priority in its constitutions and decrees. It lies at the origin of the Roman Catechism, which is also known by the name of that council and which is a work of the first rank as a summary of Christian teaching. . " 12 The Council of Trent initiated a remarkable organization of the Church's catechesis. Thanks to the work of holy bishops and theologians such as St. Peter Canisius, St. Charles Borromeo, St. Turibius of Mongrovejo or St. Robert Bellarmine, it occasioned the publication of numerous catechisms.