Mark 6:41

(Vict. Ant. e Cat. in Marc. v. Chrys. Hom in Matt. 49) Now it was with fitness that He looked up to heaven, for the Jews, when receiving manna in the desert, presumed to say of God, Can he give bread? (Ps. 78:20) To prevent this therefore, before He performed the miracle, He referred to His Father what He was about to do.

It goes on, And when he had taken the five loaves and the two fishes, he looked up to heaven, and blessed, and brake the loaves, and gave them to his disciples to set before them: and the two fishes divided he among them all. He also looks up to heaven, that He may teach us to seek our food from God, and not from the devil, as they do who unjustly feed on other men's labours. By this also He intimated to the crowd, that He could not be opposed to God, since He called upon God. And He gives the bread to His disciples to set before the multitude, that by handling the bread, they might see that it was an undoubted miracle. Or the two fishes are the discourses of fishermen, that is, their Epistles and Gospel.

(ubi sup.) Again, those men lie down on grass and are fed by the food of the Lord, who have trodden under foot their concupiscences by continence, and apply themselves diligently to hear and fulfil the words of God. The Saviour, however, does not create a new sort of food; for when He came in the flesh He preached no other things than were predicted, but showed how pregnant with mysteries of grace were the writings of the Law and the Prophets. He looks up to heaven, that He may teach us that there we must look for grace. He breaks and distributes to the disciples that they may place the bread before the multitudes, because He has opened the mysteries of prophecy to holy doctors, who are to preach them to the whole world. What is left by the crowd is taken up by the disciples, because the more sacred mysteries, which cannot be received by the foolish, are not to be passed by with negligence, but to be inquired into by the perfect. For by the twelve baskets, the Apostles and the following Doctors are typified, externally indeed despised by men, but inwardly full of healthful food. For all know that carrying baskets is a part of the work of slaves.