Wednesday of the First week of Advent
"Pledge of the Glory To Come"
If the Eucharist is the memorial of the Passover of the Lord Jesus, if by our communion at the altar we are filled "with every heavenly blessing and grace,"( Roman Canon) then the Eucharist is also an anticipation of the heavenly glory. At the Last Supper the Lord himself directed his disciples' attention toward the fulfillment of the Passover in the kingdom of God: "I tell you I shall not drink again of this fruit of the vine until that day when I drink it new with you in my Father's kingdom."'(Mt 26:29) Whenever the Church celebrates the Eucharist she remembers this promise and turns her gaze "to him who is to come."(Rev 1:4) In her prayer she calls for his coming: "Marana tha!"(1 Cor 16 22) "Come, Lord Jesus!"(Rev 22:20) "May your grace come and this world pass away!"(Didache 10, 6)
The Church knows that the Lord comes even now in his Eucharist and that he is there in our midst. However, his presence is veiled. Therefore we celebrate the Eucharist "awaiting the blessed hope and the coming of our Savior, Jesus Christ," (Titus 2:13) asking "to share in your glory when every tear will be wiped away. On that day we shall see you, our God, as you are. We shall become like you and praise you for ever through Christ our Lord." (EP III)
There is no surer pledge or dearer sign of this great hope in the new heavens and new earth "in which righteousness dwells," (2 Pet 3:13) than the Eucharist. Every time this mystery is celebrated, "the work of our redemption is carried on" (LG 3) and we "break the one bread that provides the medicine of immortality, the antidote for death, and the food that makes us live for ever in Jesus Christ." (St. Ignatius of Antioch)
Catechism of the Catholic Church