Luke 9:13

The Apostles had only got but the five loaves of the Mosaic law, and the two fishes of each covenant, which were covered in the secret place of obscure mysteries, as in the waters of the deep. But because men have five external senses, the five thousand men who followed the Lord signify those who still live in worldly ways, knowing well how to use the external things they possess. For they who entirely renounce the world are raised aloft in the enjoyment of His Gospel feast. But the different divisions of the guests, indicate the different congregations of Churches throughout the world, which together compose the one Catholic.

Now He said not this as ignorant of their answer, but wishing to induce them to tell Him how much bread they had, that so a great miracle might be manifested through their confession, when the quantity of bread was made known.

(Orat. Catech. Mag. c. 23.) For whom neither the heaven rained manna, nor the earth brought forth corn according to its nature, but from the unspeakable garner of divine power the blessing was poured forth. The bread is supplied in the hands of those who serve, it is even increased through the fulness of those who eat. The sea supplied not their wants with the food of fishes, but He who placed in the sea the race of fishes.

For, as has been said, they sought to be healed of different diseases, and because the disciples saw that what they sought might be accomplished by His simple assent, they say, Send them away, that they be no more distressed. But mark the overflowing kindness of Him who is asked. He not only grants those things which the disciples seek, but to those who follow Him, He supplies the bounty of a munificent hand, commanding food to be set before them; as it follows, But he said unto them, Give ye them to eat. But this was a command which the disciples were unable to comply with, since they had with them but five loaves and two fishes. As it follows, And they said, We have no more but five loaves and two fishes; except we go and buy meat for all this people.