John the Apostle
John 6:27BSB·traditional attribution

Do not work for food that perishes, but for food that endures to eternal life, which the Son of Man will give you. For on Him God the Father has placed His seal of approval.”

John Calvin Reformed @genevareformer

27. Labour for food, not that which perisheth. He shows to what object our desires ought to be directed, namely, to eternal life; but because, in proportion as our understandings are gross, we are always devoted to earthly things, for this reason he corrects that disease which is natural to us, before he points out what we ought to do.

Matthew Henry Presbyterian @wholebiblehenry

In these verses we have, I. The careful enquiry which the people made after Christ, Joh 6:23, Joh 6:24. They saw the disciples go to sea; they saw Christ retire to the mountain, probably with an intimation that he desired to be private for some time; but, their hearts being set upon making him a king, they way-laid his return, and the day following, the...

Commenting on John 6:22-27

John Gill Reformed Baptist @doctorgill

Then said they unto him,.... Understanding by what he said, that they must labour and work, though not for perishing food, yet for durable food; and as they imagined, in order to obtain eternal life by working: what shall we do that we might work the works of God?