That these terms, which contain Peter's prerogatives really do express jurisdiction and authority, may be thus very briefly shown. The first, "Thou art Peter, and upon this rock I will build My Church," is drawn from architecture, exhibiting between Peter and the Church, which includes also the Apostles, the relation which exists between the foundation and the superstructure. This is one of dependence, by which accordingly the Apostles must maintain an indivisible union with Peter. Which relation of dependence, again, cannot be understood without the notion of superior jurisdiction in Peter, for these are correlative. The second term corroborates this; for it is a plain duty, and undoubted moral obligation, to be united to him, if severed from whom, the words of Christ do not entitle you to expect stability or victory over the gates of hell. Now, "the gates of hell shall not prevail against it," most plainly express that perseverance and victory are promised to no one by Christ, who does not remain joined with Peter. So much for the _duty_ which binds all Christians, and the Apostles among them, to avoid separation from Peter as their destruction. But such duty involves the faculty and authority on Peter's part of enjoining on all without exception the maintenance of unity, and of keeping from the whole body the sin of schism, which, again, expresses his superior jurisdiction. Yet plainer and more striking is the _third_; for in the words, "And I will give to thee the keys of the kingdom of heaven," it is foretold that Peter, in regard to the kingdom of heaven, and therefore to all Christians, whether teachers or taught, subjects or prelates, shall discharge the office of the bearer of the keys; with which jurisdiction and authority are indivisibly united. But in the _fourth_, there is no matter relating to the heavenly kingdom, which is not subjected by this promise to Peter's authority. "Whatsoever thou shalt bind," "whatsoever thou shalt loose;" but this is in its own kind without limit, a full legislative and judicial power. Thus these four terms exactly agree with each other, and express, severally and collectively, prerogatives by which Peter is admitted to a singular and close association with Christ; and therefore is pre-eminent among the Apostles by his Primacy, and his superior authority over the whole Church.