Matthew 16:11

How is it that you do not understand that I spoke not to you concerning bread, that you should beware of the leaven of the Pharisees and of the Sadducees?

Matthew 16:6

Then Jesus said unto them, Take heed and beware of the leaven of the Pharisees and of the Sadducees.

Mark 4:40

And he said unto them, Why are you so fearful? how is it that you have no faith?

Mark 8:21

And he said unto them, How is it that you do not understand?

Luke 12:56

You hypocrites, you can discern the appearance of the sky and of the earth; but how is it that you do not discern this time?

John 8:43

Why do you not understand my speech? even because you cannot hear my word.

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