Mark 8:11-21

11Then the Pharisees came and began to argue with Jesus, asking for a sign from heaven to test him.

12Sighing deeply in his spirit he said, “Why does this generation look for a sign? I tell you the truth, no sign will be given to this generation.”

13Then he left them, got back into the boat, and went to the other side.

14Now they had forgotten to take bread, except for one loaf they had with them in the boat.

15And Jesus ordered them, “Watch out! Beware of the yeast of the Pharisees and the yeast of Herod!”

16So they began to discuss with one another about having no bread.

17When he learned of this, Jesus said to them, “Why are you arguing about having no bread? Do you still not see or understand? Have your hearts been hardened?

18Though you have eyes, don’t you see? And though you have ears, can’t you hear? Don’t you remember?

19When I broke the five loaves for the five thousand, how many baskets full of pieces did you pick up?” They replied, “Twelve.”

20“When I broke the seven loaves for the four thousand, how many baskets full of pieces did you pick up?” They replied, “Seven.”

21Then he said to them, “Do you still not understand?”