What does it mean to say that the Eucharist is a sacrifice?
I know that The Church teaches that Christ died only once and suffered only once, yet when we call the Eucharist a Sacrifice, for protestants, it’s a stick to beat us with.
The Eucharist celebration is a Sacrifice, a Memorial, and a Presence. It is first of all a real renewal or re-enactment of the one time sacrafice of Christ on the cross, which he made to his Father and which we now make with Him to the Father. So it is a Sacrafice and a Memorial. It is also a celebration of Christ’s real presence in the bread and wine just as He appeared in his glorified body after His Resurrection. But His glorified Presence is invisible and veiled by the species of the bread and wine.
" Distinction of Sacrament and Sacrifice
They should teach, then, in the first place, that the Eucharist was instituted by Christ for two purposes: one, that it might be the heavenly food of our souls, enabling us to support and preserve spiritual life; and the other, that the Church might have a perpetual Sacrifice, by which our sins might be expiated, and our heavenly Father, oftentimes grievously offended by our crimes, might be turned away from wrath to mercy, from the severity of just chastisement to clemency. Of this thing we may observe a type and resemblance in the Paschal lamb, which was wont to be offered and eaten by the children of Israel as a sacrament and a sacrifice.
Nor could our Saviour, when about to offer Himself to God the Father on the altar of the cross, have given any more illustrious indication of His unbounded love towards us than by bequeathing to us a visible Sacrifice, by which that bloody Sacrifice, which was soon after to be offered once on the cross, would be renewed, and its memory daily celebrated with the greatest utility, unto the consummation of ages by the Church diffused throughout the world.
But (between the Eucharist as a Sacrament and a Sacrifice) the difference is very great; for as a Sacrament it is perfected by consecration; as a Sacrifice, all its force consists in its oblation. When, therefore, kept in a pyx, or borne to the sick, it is a Sacrament, not a Sacrifice. As a Sacrament also, it is to them that receive it a source of merit, and brings with it all those advantages which have been already mentioned; but as a Sacrifice, it is not only a source of merit, but also of satisfaction. For as, in His Passion, Christ the Lord merited and satisfied for us; so also those who offer this Sacrifice, by which they communicate with us, merit the fruit of His Passion, and satisfy.
The Mass Is a True Sacrifice
Proof From The Council Of Trent
With regard to the institution of this Sacrifice, the holy Council of Trent has left no room for doubt, by declaring that it was instituted by our Lord at His Last Supper; while it condemns under anathema all those who assert that in it is not offered to God a true and proper Sacrifice; or that to offer means nothing else than that Christ is given as our spiritual food.
Nor did (the Council) omit carefully to explain that to God alone is offered this Sacrifice. For although the Church sometimes offers Masses in honor and in memory of the Saints, yet she teaches that the Sacrifice is offered, not to them, but to God alone, who has crowned the Saints with immortal glory. Hence the priest never says: I offer Sacrifice to thee Peter, or to thee Paul; but, while he offers Sacrifice to God alone, he renders Him thanks for the signal victory won by the blessed martyrs, and thus implores their patronage, that they, whose memory we celebrate on earth, may vouchsafe to intercede for us in heaven." ( pg 157 of the Catechism of the Council of Trent known as the Roman Catechism )
catholicsociety.com/documents/Catechism_of_the_Council%20of_Trent.pdf Read pages 136-152
Also read paragraphs 1356-1381 of the Catechism of the Catholic Church, linked below.
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