15 “Take care,” Jesus warned them, “and be on your guard against the yeast of the Pharisees and the yeast of Herod.”
16 They started discussing among themselves: “He says this because we don't have any bread.”
17 Jesus knew what they were saying, so he asked them, “Why are you discussing about not having any bread? Don't you know or understand yet? Are your minds so dull?
18 You have eyes—can't you see? You have ears—can't you hear? Don't you remember
19 when I broke the five loaves for the five thousand people? How many baskets full of leftover pieces did you take up?”“Twelve,” they answered.
20 “And when I broke the seven loaves for the four thousand people,” asked Jesus, “how many baskets full of leftover pieces did you take up?”“Seven,” they answered.
21 “And you still don't understand?” he asked them.