The Most Holy Eucharist is the most august sacrament, in which Christ the Lord himself is contained, offered, and received, and by which the Church constantly lives and grows. The Eucharistic Sacrifice…is the summit and the 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. The other sacraments and all the ecclesiastical works of the apostolate are closely related to the Holy Eucharist and are directed to it. (Can. 897)
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