St. Pius V, Pope and Confessor

The Paschal mystery has two aspects: by his death, Christ liberates us from sin; by his Resurrection, he opens for us the way to a new life. This new life is above all justification that reinstates us in God's grace, "so that as Christ was raised from the dead by the glory of the Father, we too might walk in newness of life." Justification consists in both victory over the death caused by sin and a new participation in grace. It brings about filial adoption so that men become Christ's brethren, as Jesus himself called his disciples after his Resurrection: "Go and tell my brethren." We are brethren not by nature, but by the gift of grace, because that adoptive filiation gains us a real share in the life of the only Son, which was fully revealed in his Resurrection.

For this reason the Church, especially during Advent and Lent and above all at the Easter Vigil, re-reads and re-lives the great events of salvation history in the "today" of her liturgy. But this also demands that catechesis help the faithful to open themselves to this spiritual understanding of the economy of salvation as the Church's liturgy reveals it and enables us to live it.

Jewish liturgy and Christian liturgy. A better knowledge of the Jewish people's faith and religious life as professed and lived even now can help our better understanding of certain aspects of Christian liturgy. For both Jews and Christians Sacred Scripture is an essential part of their respective liturgies: in the proclamation of the Word of God, the response to this word, prayer of praise and intercession for the living and the dead, invocation of God's mercy. In its characteristic structure the Liturgy of the Word originates in Jewish prayer. the Liturgy of the Hours and other liturgical texts and formularies, as well as those of our most venerable prayers, including the Lord's Prayer, have parallels in Jewish prayer. the Eucharistic Prayers also draw their inspiration from the Jewish tradition. the relationship between Jewish liturgy and Christian liturgy, but also their differences in content, are particularly evident in the great feasts of the liturgical year, such as Passover. Christians and Jews both celebrate the Passover. For Jews, it is the Passover of history, tending toward the future; for Christians, it is the Passover fulfilled in the death and Resurrection of Christ, though always in expectation of its definitive consummation.

In the liturgy of the New Covenant every liturgical action, especially the celebration of the Eucharist and the sacraments, is an encounter between Christ and the Church. the liturgical assembly derives its unity from the "communion of the Holy Spirit" who gathers the children of God into the one Body of Christ. This assembly transcends racial, cultural, social - indeed, all human affinities.

The assembly should prepare itself to encounter its Lord and to become "a people well disposed." the preparation of hearts is the joint work of the Holy Spirit and the assembly, especially of its ministers. the grace of the Holy Spirit seeks to awaken faith, conversion of heart, and adherence to the Father's will. These dispositions are the precondition both for the reception of other graces conferred in the celebration itself and the fruits of new life which the celebration is intended to produce afterward.

The Spirit and the Church cooperate to manifest Christ and his work of salvation in the liturgy. Primarily in the Eucharist, and by analogy in the other sacraments, the liturgy is the memorial of the mystery of salvation. the Holy Spirit is the Church's living memory.

The Word of God. the Holy Spirit first recalls the meaning of the salvation event to the liturgical assembly by giving life to the Word of God, which is proclaimed so that it may be received and lived: