Contingent upon the sacrifice of the cross, and from that sacrifice deriving all its meaning and its merit, the eucharistic sacrament itself becomes relatively sacrificial. As beforehand there was a continual sacrificial anticipation of Immanuel's atoning death, so after the event is there a continual sacramental commemoration of the accomplished purpose and prophecy. Both the Jewish passover which foreshadowed the future fact, and the Christian eucharist which to-day commemorates the fact historical, are sacrificial on the same principle and by the same rule--their relation to the cross of Calvary which gives them all their virtue and their value. The agony is over, and Christ dieth no more; the atonement once made without the walls of Jerusalem is still presented by our divine High-Priest before the mercy-seat within the vail. To all who believe, it is efficacious forever, needing no annual or even millennial repetition. But in the eucharistic sacrament, with prayers and thanksgivings, we lift up the reeking cross before the Eternal Father, and plead the sufferings of his Well-Beloved for our salvation. We say to God: "Behold this broken bread; it is the mangled flesh of thy Christ! Behold this purple cup; it is the blood which he shed for our sins! Behold at thy right hand our slaughtered Paschal Lamb, and for his sake have mercy upon us and save us!" Thus we say the holy eucharist is relatively sacrificial--sacrificial from its inseparable connection with the Redeemer's sacrifice. But even in this sense--the only one admissible to a true faith--the holy eucharist could not be sacrificial, were not its ministers in a corresponding sense sacerdotal. As the sacrament becomes relatively sacrificial by representing the Saviour's sacrifice, so its ministers become relatively sacerdotal by representing his person and functions. Commencing in the paschal chamber an ever-during sacrifice by ministering in person its accompanying meat-offering and drink-offering, he commenced there also the order of an ever-during priesthood by empowering his apostolic ministry to perpetuate that meat-offering and drink-offering forever. And, conferring sacerdotal functions upon the apostolic ministry, he conferred them upon that ministry alone. If he did not intend to limit to the twelve and their consecrated followers the power of consecrating and dispensing the sacramental bread and wine, why were not the whole five hundred brethren, or all the vast concourse of followers from Galilee, admitted to the original celebration? The selection of the few proves the exclusion of the many, and restricts the perpetual prerogative to the ministry of apostolical succession.