For my part, I do not see that this can mean anything less than that Christ is Divine, that in Him we have God, and in Him touch the actual Source of all life. In Him we have the one thing within our reach which is not earth-grown, the one uncorrupted Source of life to which we can turn from the inadequacy, impurity, and emptiness of a sin-sick world. No pebble lies hid in this bread on which we can break our teeth; no sweetness in the mouth turning afterwards to bitterness, but a new, uncontaminated food, prepared independently of all defiling influences, and accessible to all. Christ is the Bread from heaven, because in Christ God gives Himself to us, that by His life we may live.
There is another sense in which Christ probably used the word “living.” In contrast to the dead bread He had given them He was alive. The same law seems to hold good of our physical and of our spiritual life. We cannot sustain physical life except by using as food that which has been alive. The nutritive properties of the earth and the air must have been assimilated for us by living plants and animals before we can use them. The plant sucks sustenance out of the earth—we can live upon the plant but not on the earth. The ox finds ample nourishment in grass; we can live on the ox but not on the grass. And so with spiritual nutriment. Abstract truth we can make little of at first hand; it needs to be embodied in a living form before we can live upon it. Even God is remote and abstract, and non-Christian theism makes thin-blooded and spectral worshippers; it is when the Word becomes flesh; when the hidden reason of all things takes human form and steps out on the earth before us, that truth becomes nutritive, and God our life.
4. Still more explicitly Christ says: “The bread which I will give is My flesh, which I will give for the life of the world.” For it is in this great act of dying that He becomes the Bread of Life. God sharing with us to the uttermost; God proving that His will is our righteousness; God bearing our sorrows and our sins; God coming into our human race, and becoming a part of its history—all this is seen in the cross of Christ; but it is also seen that absolute love for men, and absolute submission to God, were the moving forces of Christ’s life. He was obedient even unto death. This was _His_ life, and by the cross He made it ours. The cross subdues our hearts to Him, and gives us to feel that self-sacrifice is the true life of man.