Structure of the Catechism of the Catholic Church

122. The Catechism of the Catholic Church is structured around four fundamental dimensions of the Christian life: the profession of faith; the celebration of the liturgy; the morality of the Gospel; and prayer. These four dimensions spring from a single source, the Christian mystery. This is:

– the object of the faith (Part One);

– celebrated and communicated in liturgical actions (Part Two);

– present to enlighten and sustain the children of God in their actions (Part Three);

– the basis of our prayer, whose supreme expression is the Our Father, and the object of our supplication, praise and intercession (Part Four); (⁴²⁵)

This four part structure develops the essential aspects of the faith:

– belief in the Triune God and in his saving plan;

– sanctification by him in the sacramental life;

– loving him with all one's heart and one's neighbour as oneself;

– prayer while waiting for the coming of his Kingdom and our meeting with him face to face.

The Catechism of the Catholic Church thus refers to the faith as believed, celebrated, lived and prayed. It is a call to integral Christian education. The structure of the Catechism of the Catholic Church derives from the profound unity of the Christian life. It maintains an explicit interrelation between "lex orandi", "lex credendi" and "lex vivendi". "The Liturgy itself is prayer; the confession of faith finds its proper place in the celebration of worship. Grace, the fruit of the sacraments, is the irreplaceable condition for Christian living, just as participation in the Church's Liturgy requires faith. If faith is not expressed in works it is dead and cannot bear fruit into eternal life". (⁴²⁶)

Structured around the four pillars (⁴²⁷) which sustain the transmission of the faith (the Creed, the Sacraments, the Decalogue, the Our Father), the Catechism of the Catholic Church is presented as a doctrinal point of reference for education in the four basic tasks of catechesis, (⁴²⁸) and for the drawing up of local catechisms. It does not, however, impose a predetermined configuration on the one or on the other. "The best structure for catechesis must be one which is suitable to particular concrete circumstances and cannot be established for the entire Church by a common catechism". (⁴²⁹) Perfect fidelity to Catholic doctrine is compatible with a rich diversity of presentation.