Adam Clarke on John 6:26

Ye seek me, not because ye saw, etc. - Though the miracle of the loaves was one of the most astonishing that ever was wrought upon earth; and though this people had, by the testimony of all their senses, the most convincing proof of its reality; yet we find many of them paid little attention to it, and regarded the omnipotent hand of God in it no farther than it went to satisfy the demands of their appetite! Most men are willing to receive temporal good from the hands of God; but there are few, very few, who are willing to receive spiritual blessings.