Mark 8:17-21

And Jesus perceiving it saith unto them, Why reason ye, because ye have no bread? do ye not yet perceive, neither understand? have ye your heart hardened? Having eyes, see ye not? and having ears, hear ye not? and do ye not remember? When I brake the five loaves among the five thousand, how many baskets full of broken pieces took ye up? They say unto him, Twelve. And when the seven among the four thousand, how many basketfuls of broken pieces took ye up? And they say unto him, Seven. And he said unto them, Do ye not yet understand?