The Gospel tells of a miracle that Jesus used for the purpose of teaching that he alone is the food and drink of eternal life, that he imparts grace and salvation as we partake of him, the true Bread from heaven. He not only wrought our salvation: He himself is our salvation.
St. Paul had been the son of the bondwoman, and he so cast out the son of the bondwoman from his own heart and life, that he became the son of the free woman; that is, in place of Saul the persecutor was Paul the Apostle; he was born again, born of the spirit,8 a child of Abraham by faith. Now he receives persecution rather than dishing it out. And, that share of persecution was part of knowing Christ, fellowship with his sufferings in light of the hope of the resurrection.
He went on to say:
"Verily, verily, I say unto you, He that believeth on me hath everlasting life. I am that bread of life. Your fathers did eat manna in the wilderness, and are dead. This is the bread which cometh down from heaven, that a man may eat thereof, and not die. I am the living bread which came down from heaven: if any man eat of this bread, he shall live for ever: and the bread that I will give is my flesh, which I will give for the life of the world. The Jews therefore strove among themselves, saying, How can this man give us his flesh to eat? Then Jesus said unto them, Verily, verily, I say unto you, Except ye eat the flesh of the Son of man, and drink his blood, ye have no life in you. Whoso eateth my flesh, and drinketh my blood, hath eternal life; and I will raise him up at the last day. For my flesh is meat indeed, and my blood is drink indeed. He that eateth my flesh, and drinketh my blood, dwelleth in me, and I in him. As the living Father hath sent me, and I live by the Father: so he that eateth me, even he shall live by me. This is that bread which came down from heaven: not as your fathers did eat manna, and are dead: he that eateth of this bread shall live for ever."12
9. verse 26
10 Gen 1:19
11. John 6:32-35
12. John 6:47-58