Of the effect proceeding from this cause St. Augustine says, "The whole redeemed city, the assembly and society of the saints, is offered as an universal sacrifice to God by the Great Priest, who also offered Himself in His Passion for us, according to the form of a servant, that we might be the Body of so great a Head. For this form He offered, in this He was offered, because according to this He is Mediator, in this Priest, in this Sacrifice. When, therefore, the Apostle exhorted us to present our bodies a living sacrifice: 'For as in one body we have many members, but all the members have not the same office, so we, being many, are one body in Christ, and every one members one of another:' this is the sacrifice of Christians, many one body in Christ. Which also the Church constantly performs in the sacrifice of the altar, as the faithful know, where it is shown to her that she is offered herself in that which she offers." As he says a little further on, "Of which thing (that is, Christ being, in the form of a servant, both Priest and Victim) He willed the daily sacrifice of the Church to be the Sacrament; for she being the Body, as He the Head, she learns to offer herself by Him. To this supreme and true sacrifice all false sacrifices have given way."[108]
Thus, then, the question has been answered how our Lord impressed for ever on the world the double act of His Priesthood, the assumption of human nature to His Divine Person, and the offering of that assumed nature in sacrifice. For whereas He made the bloody sacrifice once for all upon the altar of the cross, He ordered the daily sacrifice of His Church to represent it for ever in the name of His people to God the Father, wherein He immolates Himself without blood. "What then?" says St. Chrysostom; "do we not offer every day? We do offer, but making a commemoration of His death. And this is one sacrifice, and not many. How is it one and not many? Because that was once offered which entered into the Holy of holies. This is the figure of that. For we offer ever the same; not to-day one lamb and another to-morrow, but always the same. So that the sacrifice is one. Otherwise, according to the objection, 'Since it is offered many times,' are there many Christs? By no means, but there is one Christ everywhere, complete here and complete there, one Body. As then He, being offered in many places, is one Body and not many bodies, so there is one sacrifice. Our High-Priest is He who offered the sacrifice that cleanses us; that same we offer now which was then offered, which is inconsumable. This is done for a commemoration of that which was then done; for, 'Do this,' He says, 'in commemoration of Me.' We offer not another sacrifice as the (Jewish) high-priest, but ever the same; or rather we make a commemoration of the sacrifice."[109]