2. With the passing of time and in the light of its fruits, the importance of Sacrosanctum Concilium has become increasingly clear. The Council brilliantly outlined in it the principles on which are based the liturgical practices of the Church and which inspire its healthy renewal in the course of time². The Council Fathers set the Liturgy within the horizon of the history of salvation, whose purpose is the redemption of humanity and the perfect glorification of God. The wonders wrought by God in the Old Testament were but a prelude to the redemption brought to completion by Christ the Lord, especially through the Paschal Mystery of his blessed Passion, his Resurrection from the dead and his glorious Ascension³. However, it needs not only to be proclaimed but also to be accomplished; this "is set in train through the sacrifice and sacraments, around which the entire liturgical life revolves"⁴. Christ makes himself present in a special way in the liturgical gestures associating the Church with himself. Every liturgical celebration, therefore, is the work of Christ the Priest and of his Mystical Body, "full public worship"⁵ in which the faithful take part, with a foretaste in it of the Liturgy of the heavenly Jerusalem⁶. This is why the "Liturgy is the summit toward which the activity of the Church is directed" and at the same time, "the fount from which all her power flows"⁷.