¹⁴ Now they had forgotten to bring bread, and they had only one loaf with them in the boat. ¹⁵ And he cautioned them, saying, “Watch out; beware of the leaven of the Pharisees and the leaven of Herod.”^[b]16 And they began discussing with one another the fact that they had no bread. ¹⁷ And Jesus, aware of this, said to them, “Why are you discussing the fact that you have no bread? Do you not yet perceive or understand? Are your hearts hardened? ¹⁸ Having eyes do you not see, and having ears do you not hear? And do you not remember? ¹⁹ When I broke the five loaves for the five thousand, how many baskets full of broken pieces did you take up?” They said to him, “Twelve.” ²⁰ “And the seven for the four thousand, how many baskets full of broken pieces did you take up?” And they said to him, “Seven.” ²¹ And he said to them, “Do you not yet understand?”

— Mark 8:14-21, English Standard Version