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The Mass is not just a CDS (Communion Delivery System). It is a formal, structured, public act of worship consisting of prayers, chants, readings, ceremonies, and gestures, ordered to such movements of the soul as repentance, adoration, glorification, thanksgiving, and supplication. It is not simply a matter of “wherever Jesus is, God is pleased”; it is also a matter of what we are doing, what we are offering of ourselves to God, and how, and why.
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Peter Kwasniewski (Reclaiming Our Roman Catholic Birthright: The Genius and Timeliness of the Traditional Latin Mass)