A wicked and adulterous generation seeketh after a sign; and there shall no sign be given unto it, but the sign of the prophet Jonas. And he left them, and departed. (16:4)

And when his disciples were come to the other side, they had forgotten to take bread. (16:5)

Then Jesus said unto them, Take heed and beware of the leaven of the Pharisees and of the Sadducees. (16:6)

And they reasoned among themselves, saying, [It is] because we have taken no bread. (16:7)

[Which] when Jesus perceived, he said unto them, O ye of little faith, why reason ye among yourselves, because ye have brought no bread? (16:8)

Do ye not yet understand, neither remember the five loaves of the five thousand, and how many baskets ye took up? (16:9)

Neither the seven loaves of the four thousand, and how many baskets ye took up? (16:10)

How is it that ye do not understand that I spake [it] not to you concerning bread, that ye should beware of the leaven of the Pharisees and of the Sadducees? (16:11)

Then understood they how that he bade [them] not beware of the leaven of bread, but of the doctrine of the Pharisees and of the Sadducees. (16:12)

--Mark--

And he left them, and entering into the ship again departed to the other side. (8:13)

Now [the disciples] had forgotten to take bread, neither had they in the ship with them more than one loaf. (8:14)

And he charged them, saying, Take heed, beware of the leaven of the Pharisees, and [of] the leaven of Herod. (8:15)

And they reasoned among themselves, saying, [It is] because we have no bread. (8:16)

And when Jesus knew [it], he saith unto them, Why reason ye, because ye have no bread? perceive ye not yet, neither understand? have ye your heart yet hardened? (8:17)

Having eyes, see ye not? and having ears, hear ye not? and do ye not remember? (8:18)

When I brake the five loaves among five thousand, how many baskets full of fragments took ye up? They say unto him, Twelve. (8:19)

And when the seven among four thousand, how many baskets full of fragments took ye up? And they said, Seven. (8:20)

And he said unto them, How is it that ye do not understand? (8:21)