John the Apostle
John 6:64WEB·traditional attribution

But there are some of you who don’t believe.” For Jesus knew from the beginning who they were who didn’t believe, and who it was who would betray him.

John Gill Reformed Baptist

These were no true disciples at all, only nominal ones who never heard and learned of the Father. When Christ spoke of Himself as the bread of life, they took offense because He would not be made an earthly king, and they turned their backs on Him like dogs returning to their vomit, going back to the Scribes and Pharisees and seeking righteousness by the law instead of by Christ.

AI summary

William Burkitt Anglican

The root cause is plain: unbelief. Multitudes profess Christ for a time, then draw back and fall from their profession entirely. An evil heart of unbelief is what causes men to depart from Him and make shipwreck of everything they claimed to believe.

AI summary

John Calvin Reformed

Unbelief is proud and will never understand Christ's words, which it despises. If we wish to profit under this Teacher, we must bring minds disposed to listen; without humility and reverence, our understandings are harder than stones. That few profit by the Gospel today arises from the depravity of men, not from any lack in His doctrine.

AI summary