Catechism of the Catholic Church

342 Part Two In the intercessions, the Church indicates that the Eucharist is celebrated in communion with the whole Church in heaven and on earth, the living and the dead, and in communion with the pastors of the Church, the Pope, the diocesan bishop, his presbyterium and his deacons, and all the bishops of the whole world together with their Churches. 1355 In the communion, preceded by the Lord’s prayer and the breaking of the bread, the faithful receive “the bread of heaven” and “the cup of salvation,” the body and blood of Christ who offered himself “for the life of the world”: 181 Because this bread and wine have been made Eucharist (“eucharisted,” according to an ancient expression), “we call this food Eucharist, and no one may take part in it unless he believes that what we teach is true, has received baptism for the forgiveness of sins and new birth, and lives in keeping with what Christ taught.” 182 V. T he S acramental S acrifice : T hanksgiving , M emorial , P resence 1356 If from the beginning Christians have celebrated the Eucharist and in a form whose substance has not changed despite the great diversity of times and liturgies, it is because we know ourselves to be bound by the command the Lord gave on the eve of his Passion: “Do this in remembrance of me.” 183 1357 We carry out this command of the Lord by celebrating the memorial of his sacrifice. In so doing, we offer to the Father what he has himself given us: the gifts of his creation, bread and wine which, by the power of the Holy Spirit and by the words of Christ, have become the body and blood of Christ. Christ is thus really and mysteriously made present. 1358 We must therefore consider the Eucharist as: — thanksgiving and praise to the Father; — the sacrificial memorial of Christ and his Body; — the presence of Christ by the power of his word and of his Spirit. Thanksgiving and praise to the Father 1359 The Eucharist, the sacrament of our salvation accomplished by Christ on the cross, is also a sacrifice of praise in thanksgiving for thework of creation. In the Eucharistic sacrifice thewhole of creation 181 Jn 6:51. 182 St. Justin, Apol. 1, 66, 1-2: PG 6, 428. 183 1 Cor 11:24-25. 954 1382 1327 293