And though these were wrought out by His own willing submission on the one hand, and by the unfettered play of the evil passions of the worst of men on the other, yet over all that apparent chaos of unbridled devildom there ruled the unalterable purpose of God; and the 'must' was wrought out through the passions of evil-doers and the voluntary submission of the innocent sufferer; thus setting before us, in the central fact of the history of humanity, viz. the Cross and passion of Jesus Christ, the eminent example of that great mystery how the absolute freedom of the human will, and the responsibility of the guilt of human wrong-doers, are congruous with the fixed purpose of an all-determining and all-ruling Providence. But that is apart from my purpose. Mark then, that our Lord's recognition of this necessity for His suffering is, on the first and plainest aspect of it, His recognition that His suffering was necessary on the ground of filial obedience. All through His life we hear that 'must' echoing, and His whole spirit bowed to it. As He says Himself, 'The Son can do nothing of Himself.' As was said for Him of old: 'Lo, I come. In the volume of the book it is written of Me, I delight to do Thy will, and Thy law is within My heart.' So the Father's will is the Son's law; and the Father's 'Thou shalt' is answered by the Son's 'I must.' But yet that necessity grounded on filial obedience was no mere external necessity determined solely by the divine will. God so willed it, because it must be so; that it must be so was not because God so willed it. That is to say, the work to which Christ had set His hand was a work that demanded the Cross, nor could it be accomplished without it. For it was the work of redeeming the world, and required more than a beautiful life, more than a divine gentleness of heart, more than the homely and yet deep wisdom of His teachings, it required the sacrifice that He offered on the Cross. So, dear friends, Christ's 'must' is but this: 'My work is not accomplished except I die.' And remember that the connection between our Lord's work and our Lord's death is not that which subsists between the works and the deaths of great teachers, or heroic martyrs, or philanthropists and benefactors, who will gladly pay the price of life in order to carry out their loving or their wise designs. It is no mere appendage to His work, nor the price that He paid for having done it, but it is His very work in its vital centre.