Were all the conditions of a sacrifice verified in the Last Supper? And are they still verified in the Mass?

Yes, to both questions. For a true sacrifice we need a Priest, an altar, a victim, and a covenant with God. Christ was truly the great High Priest, and He gave the power of Priests to His Apostles, commissioning them to do repeatedly as He Himself had done in their presence. “Do this,” He said, “in commemoration of me.” The power was to persevere in the Church, even as Malachi had predicted. As victim, Christ offered Himself at the Last Supper. Taking bread and wine He said, “This is My body . . . This is My blood . . . As often as you shall eat this bread and drink this chalice, you shall show the death of the Lord until He come.” 1 Cor. XL, 24-26. The separate forms of consecration represented the separation of His body and blood when He ratified the Sacrifice by His death on the Cross next day. The victim, then, is Christ under the appearances of bread and wine representatively separated. This does not interfere with the value of Calvary, for Christ’s real death occurred there, and without it this representative function would be useless. Continuously through the ages the Sacrifice of the Mass has been offered daily in the Catholic Church, and is to-day offered in every place from the rising of the sun even to its going down, as Malachi predicted.As for the altar, years after the death of Christ St. Paul said, “We have an altar whereof they have no power to eat who serve the tabernacle.” Heb. XIIL, 10. Finally, there is the covenant with God. “This chalice is the new testament in my blood,” said Christ. 1 Cor. XL, 25. It had legal documentary value in the sight of God. The Catholic Church alone fulfills Scripture in the Sacrifice of the Mass.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty