15And he charged them, saying, Take heed, beware of the leaven of the Pharisees, and of the leaven of Herod. 16And they reasoned among themselves, saying, It is because we have no bread. 17And when Jesus knew it, he saith unto them, Why reason ye, because ye have no bread? perceive ye not yet, neither understand? have ye your heart yet hardened? 18Having eyes, see ye not? and having ears, hear ye not? and do ye not remember?19When I brake the five loaves among five thousand, how many baskets full of fragments took ye up? They say unto him, Twelve. 20And when the seven among four thousand, how many baskets full of fragments took ye up? And they said, Seven. 21And he said unto them, How is it that ye do not understand?