St. John Chrysostom
“For when He gave them bread, and filled their bellies, they said that He was a Prophet, and sought to make Him a King: but when He taught them concerning spiritual food, concerning eternal life, when He led them away from objects of sense, and spoke to them of a resurrection, and raised their thoughts to higher matters, when most they ought to have admired, they murmur and start away.”
Source: St. John Chrysostom, Homily 46