This Is the Mass

The Mass, the memorial of the death and resurrection of the Lord-in which the sacrifice of the cross is perpetuated over the centuries-is the summit and source of all Christian worship and life; it signifies and effects the unity of the people of God and achieves the building up of the body of Christ. It is an action of Christ himself and the Church; in it Christ the Lord, by the ministry of a priest, offers himself, substantially present under the forms of bread and wine, to God the Father and gives himself as spiritual food to the faithful who are associated with his offering.1 
1.   Cf. Codex Iuris Canonici (=CIC), 897-898.

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