Mark 8:11-21

11Then the Pharisees came out and began to dispute with Him, seeking from Him a sign from heaven, testing Him.

12But He sighed deeply in His spirit, and said, “Why does this generation seek a sign? Assuredly, I say to you, no sign shall be given to this generation.”

13And He left them, and getting into the boat again, departed to the other side.

14Now the disciples had forgotten to take bread, and they did not have more than one loaf with them in the boat.

15Then He charged them, saying, “Take heed, beware of the leaven of the Pharisees and the leaven of Herod.”

16And they reasoned among themselves, saying, “It is because we have no bread.”

17But Jesus, being aware of it, said to them, “Why do you reason because you have no bread? Do you not yet perceive nor understand? Is your heart still hardened?

18Having eyes, do you not see? And having ears, do you not hear? And do you not remember?

19When I broke the five loaves for the five thousand, how many baskets full of fragments did you take up?” They said to Him, “Twelve.”

20“Also, when I broke the seven for the four thousand, how many large baskets full of fragments did you take up?” And they said, “Seven.”

21So He said to them, “How is it you do not understand?”