John Chrysostom
Lest anyone think that creation is alien to His wisdom, as the slanderers, the Marcionites, later said, He uses creation itself as the instrument for working miracles.
Thus, when both disciples did not know what to do, He then performed the miracle. Having first recognized the difficulty of the matter, they received greater benefit in this way.
When the deed was accomplished, they would all the more recognize the power of God. The miracle that was about to be performed had also been done by the prophets, though not in the same way.
On the other hand, before performing it, Christ intended to offer praise to God. Therefore, lest the disciples fall into some weak thought, see how Christ raises the miracle above all others by the very manner of its accomplishment.
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He shows its difference from the prophetic miracles. Before the loaves appeared, He was already working the miracle, so that you might know that what does not exist is subject to Him as though it existed.
As Paul says, He "calls the things that do not exist as though they did" (Rom 4:17). As though the table were already ready and wholly prepared, He commands the people to recline at once.
By this He already stirs the disciples' minds. Having received benefit from the question put to them, they obeyed at once. They were not troubled and did not say, "What does this mean?"
They did not ask, "How do You command them to recline, when there is still nothing before us?" Thus those who at first had so little faith that they said, "Where shall we buy bread?" believed even before they saw the miracle.
They now willingly arranged the people.