Why did Christ begin by asking about the popular judgment of His personality? Apparently in order to bring clearly home to the disciples that, as far as the masses were concerned, His work and theirs had failed, and had, for net result, total misconception. Who that had the faintest glimmer of what He was could suppose that the stern, fiery spirits of Elijah or John had come to life again in Him? The second question, But whom say ye that I am?' with its sharp transition, is meant to force home the conviction of the gulf between His disciples and the whole nation. He would have them feel their isolation, and face the fact that they stood alone in their faith; and He would test them whether, knowing that they did stand alone, they had courage and tenacity to re-assert it. The unpopularity of a belief drives away cowards, and draws the brave and true. If none else believed in Him, that was an additional reason for loving hearts to cleave to Him; and those only truly know and"love Him who are ready to stand by Him, if they stand alone--Athanasius contra mundum, Mark, too, that this is the all-important question for every man. Our own individual' thought' of Him determines our whole worth and fate.
Mark gives Peter's confession in a lower key, as it were, than Matthew does, omitting the full-toned clause, The Son of the living God.' This is not because Mark has a lower conception than his brother Evangelist, for the first words of this Gospel announce that it is the Gospel of Jesus, the Messiah, the Son of God.' And, as he has identified the two conceptions at the outset, he must, in all fairness, be supposed to consider that the one implies the other, and to include both here. But possibly there is truth in the observation that the omission is one of a number Of instances in which this Gospel passes lightly over the exalted side of Christ's nature, in accordance with its purpose of setting Him forth rather as the Servant than as the Lord. It is not meant that that exalted side was absent from Mark's thoughts, but that his design led him rather to emphasise the other. Matthew's is the Gospel of the King; Mark's, of the Worker.
The omission of Christ's eulogium on Peter has often been pointed out as an interesting corroboration of the tradition that he was Mark's source; and perhaps the failure to record the praise, and the carefulness to tell the subsequent rebuke, reveal the humble-hearted elder' into whom the self-confident young Apostle had grown. Flesh delights to recall praise; faith and self-knowledge find more profit in remembering errors forgiven and rebukes deserved, and in their severity, most loving. How did these questions and their answers serve as introduction to the announcement of the Cross? In several ways. They brought clearly before the disciples the hard fact of Christ's rejection by the popular voice, and defined their own position as sharply antagonistic. If His claims were thus unanimously tossed aside, a collision must come. A rejected Messiah could not fail to be, sooner or later, a slain Messiah. Then clear, firm faith in His Messiahship was needed to enable them to stand the ordeal to which the announcement, and, still more, its fulfilment, would subject them. A suffering Messiah might be a rude shock to all their dreams; but a suffering Jesus, who was not Messiah, would have been the end of their discipleship. Again, the significance and worth of the Cross could only be understood when seen in the light of that great confession. Even as now, we must believe that He who died was the Son of the living God before we can see what that Death was and did. An imperfect conception of who Jesus is takes the meaning and the power out of all His life, but, most of all, impoverishes the infinite preciousness of His Death.
The charge of silence contrasts singularly with the former employment of the Apostles as heralds of Jesus. The silence was partly punitive and partly prudential. It was punitive, inasmuch as the people had already had abundantly the proclamation of His gospel, and had cast it away. It was in accordance with the solemn law of God's retributive justice that offers rejected should be withdrawn; and from them that had not, even that which they had should be taken away. Christ never bids His servants be silent until men have refused to hear their speech. The silence enjoined was also prudential, in order to avoid hastening on the inevitable collision; not because Christ desired escape, but because He would first fulfil His day.