Thus a living God will have a living Church; and in this first great period—instinct with a character of its own, as the conflict between the new Christian nation and the mightiest offspring of the old civilisation, that heir of Egypt, Assyria, Persia, and Greece, which transcended its ancestors—the great charter lies in the words, "As My Father sent Me, so also send I you." It is this ever-living mission which perpetuates "the Tradition or Delivery." Thus it is the accordant witness of all that we have hitherto said, from the testimony of the sacred writings to that of the first fathers and teachers, exhibited in all their conduct, that the living apostolic succession is the one thing instituted by God to carry on His revelation and to maintain His kingdom. This succession it is which bears in its hands the various records forming the treasury of the kingdom, whether they be the Scriptures of the Old and New Testaments, or the sacraments which communicate a divine life, or the majestic liturgy which expresses the divine worship, or the daily praxis of the Church, which is, in fact, the embodiment of its unwritten tradition: in all these, and through them in all ages, the apostolic succession works. And the mission through which it works is as living, real, and present, as immediate and efficacious now, as when the words first dropped from the lips of our Lord in the Body in which He rose again, "As My Father sent Me, so also send I you." We may divide the consideration of the manner in which the Apostles proclaimed the divine kingdom into two heads, the first of which will be the whole work of positive promulgation, and the second the whole defence against error. As to the first, I will touch on five points—the system of catechesis, the employment of a creed, the dispensing of sacraments, the system of penance, and the Scriptures carried in the Church's hand. And I am considering these especially in one point of view, as illustrating the method of teaching pursued by a body which was intrusted with a divine message.