John 6 - Matthew Henry's Concise Commentary on the Bible
He directs to spiritual food.
Instead of answering the inquiry how he came there, Jesus blamed their asking. The utmost earnestness should be employed in seeking salvation, in the use of appointed means; yet it is to be sought only as the gift of the Son of man. Him the Father has sealed, proved to be God. He declared the Son of man to be the Son of God with power. (Jn 6:28-35)