8 Prologue eration to generation, by professing the faith, by living it in frater- nal sharing, and by celebrating it in liturgy and prayer. 6 II. H anding on the F aith : C atechesis 4 Quite early on, the name catechesis was given to the totality of the Church’s efforts to make disciples, to help men believe that Jesus is the Son of God so that believing they might have life in his name, and to educate and instruct them in this life, thus building up the body of Christ. 7 5 “Catechesis is an education in the faith of children, young people, and adults which includes especially the teaching of Chris tian doctrine imparted, generally speaking, in an organic and systematic way, with a view to initiating the hearers into the fullness of Christian life.” 8 6 While not being formally identified with them, catechesis is built on a certain number of elements of the Church’s pastoral mission which have a catechetical aspect, that prepare for cateche sis, or spring from it. They are: the initial proclamation of the Gospel or missionary preaching to arouse faith; examination of the reasons for belief; experience of Christian living; celebration of the sacraments; integration into the ecclesial community; and apos- tolic and missionary witness. 9 7 “Catechesis is intimately bound up with the whole of the Church’s life. Not only her geographical extension and numerical increase, but even more her inner growth and correspondence with God’s plan depend essentially on catechesis.” 10 8 Periods of renewal in the Church are also intense moments of catechesis. In the great era of the Fathers of the Church, saintly bishops devoted an important part of their ministry to catechesis. St. Cyril of Jerusalem and St. John Chrysostom, St. Ambrose and St. Augustine, and many other Fathers wrote catechetical works that remain models for us. 11 9 “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 6 Cf. Acts 2:42. 7 Cf. John Paul II, apostolic exhortation, Catechesi tradendae 1; 2. 8 CT 18. 9 CT 18. 10 CT 13. 11 Cf. CT 12. 12 CT 13.