Mark 8:16

13 And he left them, and again entering into [the boat] departed to the other side.

14 And they forgot to take bread; and they had not in the boat with them more than one loaf.

15 And he charged them, saying, Take heed, beware of the leaven of the Pharisees and the leaven of Herod.

16 And they reasoned one with another, saying, We have no bread.

17 And Jesus perceiving it saith unto them, Why reason ye, because ye have no bread? do ye not yet perceive, neither understand? have ye your heart hardened?

18 Having eyes, see ye not? and having ears, hear ye not? and do ye not remember?

19 When I brake the five loaves among the five thousand, how many baskets full of broken pieces took ye up? They say unto him, Twelve.