In chapter 16 we advance a great step, spite (yea, because) of unbelief, deep and manifest, now on every side. The Lord has nothing for them, or for Him, but to go right on to the end. He had brought out the kingdom before in view of that which betrayed to Him the unpardonable blasphemy of the Holy Spirit. The old people and work then closed in principle, and a new work of God in the kingdom of heaven was disclosed. Now He brings out not the kingdom merely, but His Church; and this not merely in view of hopeless unbelief in the mass, but of the confession of His own intrinsic glory as the Son of God by the chosen witness. No sooner had Peter pronounced to Jesus the truth of His person, “Thou art the Christ, the Son of the living God,” than Jesus holds the secret no longer. “Upon this rock,” says He, “I will build my Church; and the gates of hell shall not prevail against it.” He also gives Peter the keys of the kingdom, as we see afterward. But first appears the new and great fact, that Christ was going to build a new building, His assembly, on the truth and confession of Himself, the Son of God. Doubtless, it was contingent upon the utter ruin of Israel through their unbelief; but the fall of the lesser thing opened the way for the gift of a better glory in answer to Peter’s faith in the glory of His person. The Father and the Son have their appropriate part, even as we know from elsewhere the Spirit sent down from heaven in due time was to have His. Had Peter confessed who the Son of man really is? It was the Father’s revelation of the Son; flesh and blood had not revealed it to Peter, but, “my Father which is in heaven.” Thereon the Lord also has His word to say, first reminding Peter of his new name suitably to what follows. He was going to build his Church “upon this rock”—Himself, the Son of God. Henceforth, too, He forbids the disciples to proclaim Him as the Messiah. That was all over for the moment through Israel’s blind sin; He was going to suffer, not yet reign at Jerusalem. Then, alas! we have in Peter what man is, even after all this. He who had just confessed the glory of the Lord would not hear His master speaking thus of His going to the cross (by which alone the Church, or even the kingdom, could be established), and sought to swerve Him from it. But the single eye of Jesus at once detects the snare of Satan into which natural thought led, or at least exposed, Peter to fall. And so, as savoring not divine but human things, he is bid to go behind (not from) the Lord as one ashamed of Him. He, on the contrary, insists not only that He was bound for the cross, but that its truth must be made good in any who will come after Him. The glory of Christ’s person strengthens us, not only to understand His cross, but to take up ours.