Matthew 16:6-11

6Jesus said to them, “Watch and beware of the leaven of the Pharisees and Sadducees.” 7And they began discussing it among themselves, saying, “We brought no bread.” 8But Jesus, aware of this, said, “O you of little faith, why are you discussing among yourselves the fact that you have no bread? 9Do you not yet perceive? Do you not remember the five loaves for the five thousand, and how many baskets you gathered? 10Or the seven loaves for the four thousand, and how many baskets you gathered? 11How is it that you fail to understand that I did not speak about bread? Beware of the leaven of the Pharisees and Sadducees.”