12. The Liturgy offers the deepest and most effective answer to this yearning for the encounter with God. It does so especially in the Eucharist, in which we are given to share in the sacrifice of Christ and to nourish ourselves with his Body and his Blood. However, Pastors must ensure that the sense of mystery penetrates consciences, making them rediscover the art of "mystagogic catechesis", so dear to the Fathers of the Church³¹. It is their duty, in particular, to promote dignified celebrations, paying the proper attention to the different categories of persons:  children, young people, adults, the elderly, the disabled. They must all feel welcome at our gatherings, so that they may breathe the atmosphere of the first community of believers who "devoted themselves to the Apostles' teaching and fellowship, to the breaking of bread and the prayers" (Acts 2: 42).