Abstract
Summary: The aim of this article is to draw out the consequences of the affirmation that we are rendered contemporaneous with Christ through the Liturgy of the Church. We shall follow the exposition made by Odo Casel in The Mystery of Christian Worship (Das christliche Kultmysterium) and then we shall see how this teaching is reflected and developed in the current doctrine of the Church, taking as our points of reference the documents of the Second Vatican Council and the Catechism of the Catholic Church. Casel deals with the argument of the presence of the Mystery of Christ in the liturgical year, both as a whole and in each of its various times and feasts. Then he goes on to analyze this presence on the liturgical day, rhythmized by the celebration of the Liturgy of the Hours. Since the Liturgy of the Hours is fundamentally prayer, in addressing this theme Casel will also develop his doctrine on Christian prayer and its sacramental relationship with the prayer of Christ.
Key words: mystery of worship, Odo Casel, mystery, sacrament, liturgy, time, eternity.