John Chrysostom — as excerpted in the Catena Aurea on John 6:1-14

“(Hom. xlii. 1) Though favoured with such teaching, they were influenced less by it, than by the miracles; a sign of their low state of belief: for Paul says of tongues, that they are for a sign, not to them that believe, but to them that believe not. (1 Cor. 14:22) They were wiser of whom it is said, that they were astonished at His doctrine. (Matt. 7:28) The Evangelist does not say what miracles He wrought, the great object of his book being to give our Lord’s discourses. It follows: And Jesus went up into a mountain, and there sat with His disciples. He went up into the mountain, on account of the miracle which was going to be done. That the disciples alone ascended with Him, implies that the people who stayed behind were in fault for not following. He went up to the mountain too, as a lesson to us to retire from the tumult and confusion of the world, and leave wisdom in solitude. And the passover, a feast of the Jews, was nigh. Observe, in a whole year, the Evangelist has told us of no miracles of Christ, except His healing the impotent man, and the nobleman’s son. His object was to give not a regular history, but only a few of the principal acts of our Lord. But why did not our Lord go up to the feast? He was taking occasion, from the wickedness of the Jews, gradually to abolish the Law.”