A wicked and adulterous generation seeketh a sign; but there shall no sign be given to it, but the sign of the prophet Jonah. And he left them and departed. And when his disciples were come to the other side, they had forgotten to take bread. And Jesus said to them, Take heed and beware of the leaven of the Pharisees and Saducees. read more.
And they reasoned among themselves, saying, We have taken no bread. Jesus knowing it said to them, O ye of little faith, why reason ye among yourselves, because ye have taken no bread? Do ye not yet understand nor remember the five loaves of the five thousand, and how many baskets ye took up? Neither the seven loaves of the four thousand, and how many baskets ye took up? How do ye not understand, that I spake not to you concerning bread, to beware of the leaven of the Pharisees and Saducees? Then they understood, that he did not bid them beware of the leaven of bread, but of the doctrine of the Pharisees and Saducees.

And he left them and taking boat again, went to the other side. Now they had forgotten to take bread; nor had they in the boat with them any more than one loaf. And he charged them, Take heed, beware of the leaven of the Pharisees and of the leaven of Herod. read more.
And they reasoned among themselves, saying, We have no bread. And Jesus knowing it saith to them, Why reason ye, because ye have no bread? Perceive ye not yet, neither consider? Have ye your heart yet hardened? Having eyes, see ye not? And having ears, hear ye not? And do not ye remember? When I brake the five loaves among the five thousand, how many baskets full of fragments took ye up? They say to him, Twelve. And when the seven among four thousand, how many baskets full of fragments took ye up? And they said, Seven. And he said to them, How is it, that ye do not understand?