He is misunderstood by the disciples

^5-12 Then his disciples came to him on the other side of the lake, forgetting to bring any bread with them. “Keep your eyes open,” said Jesus to them, “and be on your guard against the ‘yeast’ of the Pharisees and Sadducees!” But they were arguing with each other, and saying, “We forgot to bring the bread.” When Jesus saw this he said to them, “Why all this argument among yourselves about not bringing any bread, you little-faiths? Don’t you understand yet, or have you forgotten the five loaves and the five thousand, and how many baskets you took up afterwards; or the seven loaves and the four thousand and how many baskets you took up then? I wonder why you don’t understand that I wasn’t talking about bread at all—I told you to beware of the yeast of the Pharisees and Sadducees.” Then they grasped the fact that he had not told them to be beware of yeast in the ordinary sense but of the teaching of the Pharisees and Sadducees.