The first section (Matt. 16:13-20) gives us Peter's great confession in the name of the disciples, and Christ's answer to it. The centre of this section is the eager avowal of the impetuous apostle, always foremost for good or evil. We note the preparation for it, its contents, and its results. As to the preparation, our Lord is entering on a new era in His work, and desires to bring clearly into His followers' consciousness the sum of His past self-revelation. The excitement, which He had checked after the first miraculous feeding, had died down. The fickle crowd had gone away from Him, and the shadows of the cross were darkening. Amid the seclusion of the woods, fountains, and rocks of Caesarea, far away from distracting influences, He puts these two momentous questions. Following the Revised Version reading, we have a double contrast between the first and second. Men' answers to ye,' and the Son of Man' to I.' The first question is as to the partial and conflicting opinions among the multitudes who had heard His name for Himself from His own lips; the second, in its use of the I,' hints at the fuller unveiling of the depths of His gracious personality, which the disciples had experienced, and implies, Surely you, who have been beside Me, and known Me so closely, have reached a deeper understanding.' It has a tone of the same wistfulness and wonder as that other question of His, Have I been so long time with you, and yet hast thou not known Me?' For their sakes, He seeks to draw out their partly unconscious faith, that had been smouldering, fed by their daily experience of His beauty and tenderness. Half-recognised convictions float in many a heart, which need but a pointed question to crystallise into master-truths, to which, henceforward, the whole being is subject. Great are the dangers of articulate creeds; but great is the power of putting our shadowy beliefs into plain words. With the mouth confession is made unto salvation.'
Why should this great question have been preceded by the other? Probably to make the disciples feel more distinctly the chaotic contradictions of the popular judgment, and their own isolation by their possession of the clearer light. He wishes them to see the gulf opening between them and their fellows, and so to bind them more closely to Himself. This is the question the answer to which settles everything for a man. It has an intensely sharp point. We cannot take refuge from it in the general opinion. Nor does any other man's judgment about Him matter one whir to us. This Christ has a strange power, after nineteen hundred years, of coming to each of us, with the same persistent interrogation on His lips. And to-day, as then, all depends on the answer which we give. Many answer by exalted estimates of Him, like these varying replies which ascribed to Him prophetic authority, but they have not understood His own name for Himself, nor drunk in the meaning of His self-revelation, unless they can reply with the full-toned confession of the apostle, which sets Him far above and apart from the highest and holiest.
As to the contents of the confession, it includes both the human and the divine sides of Christ's nature. He is the Messiah, but He is more than what a Jew meant by that name; He is the Son of the living God,' by which we cannot indeed suppose that Peter meant all that he afterwards learned it contained, or all that the Church has now been taught of its meaning, but which, nevertheless, is not to be watered down as if it did not declare His unique filial relation to the Father, and so His divine nature. Nathanael had burst into rapturous adoration of Jesus as the Son of God' at the very beginning; and the disciples' glad confidence, which cast out the fear of the dim form striding across the sea, had echoed the confession; all had heard His words, No man knoweth the Father but the Son.' So we need not hesitate to interpret this confession as in essence and germ containing the whole future doctrine of our Lord's divinity. True, the speaker did not know all which lay in His words. Do we? Do we not see here an illustration of the method of Christian progress in doctrine, which consists not in the winning of new truths, but in the penetrating further into the meaning of old and initial truths? The conviction which made and makes a Christian, is this of Peter's; and Christian growth is into, not away from, it.
As to the results, they are set forth in our Lord's answer, which breathes of delight, and we may almost say gratitude. His manhood knew the thrill of satisfaction at having some hearts which understood though partially, and loved even better than they knew. The solemn address to the apostle by his ancestral name, gives emphasis to the contrast between his natural weakness and his divine illumination and consequent privilege. The name of Peter is not here bestowed, but interpreted. Christ does not say' Thou shalt be,' but Thou art,' and so presupposes the former conferring of the name. Unquestionably, the apostle is the rock on which the Church is built. The efforts to avoid that conclusion would never have been heard of, but for the Roman Catholic controversy; but they are as unnecessary as unsuccessful. Is it credible that in the course of an address which is wholly occupied with conferring prerogatives on the apostle, a clause should come in, which is concerned about an altogether different subject from the thou' of the preceding and the thee' of the following clauses, and which yet should take the very name of the apostle, slightly modified, for that other subject? We do not interpret other books in that fashion. But it was not the flesh and blood' Peter, but Peter as the recipient and faithful utterer of the divine inspiration in his confession, who received these privileges. Therefore they are not his exclusive property, but belong to his faith, which grasped and confessed the divine-human Lord; and wherever that faith is, there are these gifts, which are its results. They are the natural' consequences of the true faith in Christ, in that higher region where the supernatural is the natural. Peter's grasp of Christ's nature wrought upon his character, as pressure does upon sand, and solidified his shifting impetuosity into rock-like firmness. So the same faith will tend to do in any man. It made him the chief instrument in the establishment of the early Church. On souls steadied and made solid by like faith, and only on such, can Christ build His Church. Of course, the metaphor here regards Jesus, not as the foundation, as the Scripture generally does, but as the founder. The names of the twelve apostles of the Lamb are on the foundations of the heavenly city; and, in historical fact, the name of this apostle is graven on the deepest and first laid. In like subordinate sense, all who share that heroic faith and proclaim it are used by the Master-builder in the foundations of His Church; and Peter himself is eager to share his name among his brethren, when he says Ye also, as living stones.'
Built on men who hold by that confession, the Church is immortal; and the armies who pour out of the gates of the pale kingdoms of the unseen world shall not be able to destroy it. Peter, as confessor of his Lord's human-divine nature, wields the keys of the kingdom of heaven, like a steward of a great house; and that too was fulfilled in his apostolic activity in his admitting Jews at Pentecost, and Gentiles in the house of Cornelius. But the same power attends all who share his faith and avowal, for the preaching of that faith is the opening of heaven's door to men. He receives the power of binding and loosing, by which is not meant that of forgiving or retaining sins, but that of prohibiting or allowing actions, or, in other words, of laying down the law of Christian conduct. This meaning of the metaphors is made certain by the common Jewish use of them. Despotic legislative power is not here committed to the apostle, but the great principle is taught that the morality of Christianity flows directly from its theology, and that whosoever, like Peter, grasps firmly the cardinal truth of Christ's nature, and all which flows therefrom, will have his insight so cleared that his judgments on what is permitted or forbidden to a Christian man will correspond with the decisions of heaven, in the measure of his hold upon the truth which underlies all religion and all morality, namely, Thou art the Christ, the Son of the living God.' These are gifts to Peter indeed, but only as possessor of that faith, and are much more truly understood as belonging to all who possess like precious faith' (as Peter says), than as the prerogative of any individual or class.