John Chrysostom
See verse 7. He did not concern Himself with His own nourishment, and only incidentally occupied Himself with this matter.
His disciples learned to satisfy their needs in the same way. They did not carry provisions with them for the road.
Another Evangelist also indicates this, saying that when Christ spoke of the leaven of the Pharisees, the disciples thought He meant that they had brought no bread with them.
When Christ led His hungry disciples, who plucked and ate ears of grain, and when it is said that He Himself, feeling hunger, came to the fig tree, by all this He teaches us only to despise the belly.
He does not consider service to it worthy of concern. Look here also: they brought nothing with them.
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Yet, having no food with them, they were not anxious about it beforehand or from the beginning of the day. They went to buy it at the time when everyone usually had already dined.
But we, as soon as we rise from bed, care about this before all other things. We summon cooks and table servants and give them orders with great concern.
Only after this do we proceed to other matters. Yet we always care for the things of life before spiritual things, and we regard as necessary what should be counted superfluous.
Thus everything among us is perverted. We ought instead to direct all attention to spiritual matters and, after fulfilling them, then attend to the things of life.
Why, finally, did the Lord send away His disciples? "His disciples," says the Gospel, "had gone away into the city to buy food."
This poor woman, as we have already explained, was timid and would not have dared to raise her eyes before a large gathering.
If she had seen the teacher surrounded by disciples, the disciples themselves, a crowd of people, or anything special, important, imposing, or brilliant, she would immediately have fled. In that way the catch would have been lost.
She would not have dared to approach. The fish would have escaped from the nets, would not have been caught, but would have leapt out.
This is why He sent the disciples into the city. Go, He says, and buy food. You go and buy for yourselves, but I have another dinner.
"My food is to do the will of Him who sent Me and to accomplish His work" (Jn 4:34).