II. To take another point. The office of[33] authoritative teaching is in the New Testament closely connected with the power of working miracles, so that Christ not only said of Himself, "If I had not come and spoken to them, they would not have sin; but now they have no excuse for their sin:" but likewise added, "If I had not done among them the works that no other man hath done, they would not have sin: but now they have both seen and hated both Me and My Father:"[34] to shew that, while faith depended on preaching, and authoritative instruction, these also needed the power of _works_ to conciliate conviction. In accordance with which, when He first sent out His Twelve to preach, He not only charged them what to say, "the kingdom of heaven is at hand,"[35] but added the fullest miraculous power, "heal the sick, raise the dead, cleanse the lepers, cast out devils." And when more solemnly sending them, not to one people, but to all nations, "Go ye into the whole world, and preach the Gospel to every creature," He adds their warrant, "these signs shall follow them that believe. In My name they shall cast out devils, they shall speak with new tongues, they shall take up serpents:" and the Evangelist subjoins, "They going forth preached everywhere, the Lord working withal, and confirming the word with signs that followed."[36] Remembering, then, this very close connexion between the authority of Apostolic teaching and the power of working miracles, we may fix a criterion for recognising the exercise of the supreme office in teaching. Suppose any one of the Apostles to have been invested at the commencement of the Church with this office, how may he be ascertained? If any one is found invariably the first to announce the word of truth, and likewise to confirm it with miracles, you may suppose him to be that one. Suppose, again, that Luke intended to represent one of the Apostles as the supreme teacher. How may it be safely inferred? If, in the course of his narration, he continually exhibits one as eminent above all the rest in preaching the Gospel and guaranteeing it by signs. These are not tests arbitrarily chosen, but naturally suggested. And both exactly fit to Peter, and to Peter alone. For he, in this history of the universal Church, is the first, nay, well nigh the only one, both to preach and to support his preaching by miracles. And Luke takes pains to relate no less his miracles than his discourses, and scarcely describes with any detail either the one or the other, of any but Peter.