But, besides all this, Peter was animated by the strong spirit of self-assertion and determination. Always on the lake shore he had been able to get to the front by his stronger voice, and broader shoulders, and more vehement manner. Why should he not do the same now? Why could he not keep pace with Christ even through the dark valley, and accompany Him through unknown worlds? It cannot be, said Christ; you are too strong in your carnal strength, too self-reliant, too confident. It is not possible for you to be with Me, in the life that springs from death, and to which death is the door, till you have deeply drunk into the spirit of My death. You are too strong to follow Me when I descend to the lowest on My way to the highest; I must take for My companion now a forgiven malefactor; but I will some day come for you, and receive you to Myself. So Peter had to be broken on the wheel of a servant-girl's question, and humbled to the dust. In those bitter hours he was thoroughly emptied of his old proud, self-reliant, vain-glorious spirit, and became as a little child. This must be our path also. We must descend with Christ, if we would ascend to sit at His side. We must submit to the laying of our pride in the very dust. We must accept humiliations and mortifications, the humblings of perpetual failure and shortcoming, the friction and fret of infirmity and pain; and when we have come to an end of ourselves, we shall begin to know Christ in a new and deeper fashion. He will pass by and say, "Live!" The spirit of His life will enter into us; the valley of Achor will become a door of hope, and we shall sing God's glad new song of Hope. The ideal which had long haunted us, in our blood, but unable to express itself, will burst into a perfect flower of exquisite scent and hue. III. THE CERTAINTY OF THE ULTIMATE GRATIFICATION OF EVERY DESIRE GOD HAS IMPLANTED.--This is an absolute certainty, that God inserts no desire or craving in our nature, for which there is no appropriate gratification. The birds do not seek for food which is not ready for them. The young lions do not ask for prey that is not awaiting them somewhere in the forest glade. Hence the absoluteness of that _shall_--"Thou _shalt_ follow Me afterward." It is as if Jesus said, "I have taught you to love Me, and long after Me; and I will certainly gratify the appetite which I have created." Pentecost was the Divine fulfillment of all those conditions of which we have been speaking. It was not enough that Peter should be an emptied and broken man; he must become also a God-possessed, a Spirit-filled man. Thus only could he be fitted to know Christ after a spiritual sort, and to participate in His Resurrection Life. It was surely to the Advent of the Holy Ghost that our Lord referred in that significant _afterward_.