Many therefore of his disciples, when they had heard this, said, This is a hard saying; who can hear it?
All Commentaries on John 6:60 Go To John 6
Cyril of Alexandria
AD 444
This is the custom of the simple: they ever find fault with the more subtle doctrines and foolishly tear in pieces any thought that is above them, because themselves understand it not: although they ought rather to have been eager to learn, and to have loved to search diligently the things spoken, not on the contrary to rise up against so wise words, and call that hard, which they ought to have marvelled at. For they are somewhat in the same plight, as one may see those in who have lost their teeth. For the one hurrying to the more delicate food, often reject the more wholesome, and sometimes blame the more excellent, not acknowledging the disease, whereby they are compelled to decline it: and these, the foster-brethren of unlearning and bereft of sound mind, shrink from knowledge, which they ought to have pursued with exceeding much toil, and to have attained by intent zeal. The spiritual man then will delight himself in the words of our Saviour, and will justly cry out, How sweet are Thy words unto my throat, yea, above honey and the comb to my mouth; while the carnal Jew ignorantly esteeming the spiritual Mystery to be foolishness, when admonished by the Words of the Saviour to mount up to the understanding befitting man, ever sinketh down to the folly which is his foster-brother, calling evil good, and good evil, according to the Prophet's voice. He follows again his fathers, and herein too is he detected imitating the unlearning of his forefathers. For the one on receiving the manna from God, and being made partakers of the blessing from above, were dragged down to their wonted coarseness, and sought for the unsavourinesses of Egypt, desiring to behold onions, leeks, and kettles of fish: and these on being exhorted to receive the life-giving Grace of the Spirit, and taught to feed on the Very Bread, which cometh from God the Father, turn aside after their own error, lovers of pleasure rather than lovers of God; and as their forefathers used to find fault with the very food of manna, daring to say, And our soul is dried away with this manna: so do these too again reject the Very Bread, and blush not to say, Hard is this saying.
The hearers therefore of the Divine Mysteries must be wise, they must be approved exchangers, so as to know the approved and counterfeit coin, and neither unseasonably to bring inextricable questioning on those things which are to be received in faith, nor to lavish a faith sometimes harmful upon those things that require investigation, but to render to every thing that is said its due, and to advance as it were by a straight path, refusing to turn aside on either hand. For by a royal road beseems it him to travel who runneth to uprightness of faith which is in Christ.