Matthew 14:19

But the Lord answered, They have no need to go, shewing that those whom He heals have no need of the food of mercenary doctrine, and have no necessity to return to Judaea to buy food; and He commands the Apostles that they give them food. Did He not know then that there was nothing to give them? But there was a complete series of types to be set forth; for as yet it was not given the Apostles to make and minister the heavenly bread, the food of eternal life; and their answer thus belongs to the chain of spiritual interpretation; they were as yet confined to the five loaves, that is, the five books of the Law, and the two fishes, that is, the preaching of the Prophets and of John. These therefore the Apostles first set forth, because they were yet in these things; and from these things the preaching of the Gospel grows to its more abundant strength and virtue. Then the people is commanded to sit down upon the grass, as no longer lying upon the ground, but resting upon the Law, each one reposing upon the fruit of his own works as upon the grass of the earth.

Then the loaves are given to the Apostles, because through them the gifts of divine grace were to be rendered. And the number of them that did eat is found to be the same as that of those who should believe; for we find in the book of Acts that out of the vast number of the people of Israel, five thousand men believed.

While the Lord breaks there is a sowing of food; for had the loaves been whole and not broken into fragments, and thus divided into a manifold harvest, they could not have fed so great a multitude. The multitude receives the food from the Lord through the Apostles; as it follows, And he gave the loaves to his disciples, and the disciples to the multitude. Or, they are bid to lie down on the grass, and that, according to another Evangelist, by fifties and by hundreds, that after they have trampled upon their flesh, and have subjugated the pleasures of the world as dried grass under them, then by the presencea of the number fifty, they ascend to the eminent perfection of a hundred. He looks up to heaven to teach us that our eyes are to be directed thither. The Law with the Prophets is broken, and in the midst of them are brought forward mysteries., that whereas they partook not of it whole, when broken into pieces it may be food for the multitude of the Gentiles.

The multitude being hungry, He creates no new viands, but having taken what the disciples had, He gave thanks. In like manner when He came in the flesh, He preached no other things than what had been foretold, but showed that the writings of the Law and the Prophets were big with mysteries.

These therefore the Apostles first set forth, because they were yet in these things; and from these things the preaching of the Gospel grows to its more abundant strength and virtue. Then the people is commanded to sit down upon the grass, as no longer lying upon the ground, but resting upon the Law, each one reposing upon the fruit of his own works as upon the grass of the earth.