6:64. It is the spirit that quickeneth: the flesh profiteth nothing. The words that I have spoken to you are spirit and life.
The flesh profiteth nothing... Dead flesh separated from the spirit, in the gross manner they supposed they were to eat his flesh, would profit nothing. Neither doth man's flesh, that is to say, man's natural and carnal apprehension, (which refuses to be subject to the spirit, and words of Christ,) profit any thing. But it would be the height of blasphemy, to say the living flesh of Christ (which we receive in the blessed sacarament, with his spirit, that is, with his soul and divinity) profiteth nothing. For if Christ's flesh had profitedus nothing, he would never have taken flesh for us, nor died in us nothing, he would never have taken flesh for us, nor died in the flesh for us. Are spirit and life... By proposing to you a heavenly sacrament, in which you shall receive, in a wonderful manner, spirit, grace, and life, in its very fountain.
6:65. But there are some of you that believe not. For Jesus knew from the beginning who they were that did not believe and who he was that would betray him.
6:66. And he said: Therefore did I say to you that no man can come to me, unless it be given him by my Father.
6:67. After this, many of his disciples went back and walked no more with him.
6:68. Then Jesus said to the twelve: Will you also go away?
6:69. And Simon Peter answered him: Lord, to whom shall we go? Thou hast the words of eternal life.
6:70. And we have believed and have known that thou art the Christ, the Son of God.
6:71. Jesus answered them: Have not I chosen you twelve? And one of you is a devil.
6:72. Now he meant Judas Iscariot, the son of Simon: for this same was about to betray him, whereas he was one of the twelve.