Pope St. John Paul II
“In the Old Testament, the ‘memorial’ par excellence of God’s works in history was the Passover liturgy of the Exodus: every time the people of Israel celebrated the Passover, God effectively offered them the gifts of freedom and salvation… The interweaving of God’s remembrance with that of man is also at the centre of the Eucharist, which is the ‘memorial’ par excellence of the Christian Passover. For ‘anamnesis’, i.e., the act of remembrance, is the heart of the celebration: Christ’s sacrifice, a unique event done ephapax, that is, ‘once for all’ (Heb 7: 27; 9: 12, 26; 10: 12), extends its saving presence in the time and space of human history. “
Source: Â Pope St. John Paul II, General Audience – October 4, 2000