Matthew 16:11
How is it that ye do not understand, that I spake not to you of bread, to beware of the leaven of the Pharisees and of the Sadducees?
Matthew 16:6
Then Jesus said to them, Beware and abstain from the leaven of the Pharisees and of the Sadducees.
Mark 4:40
And he said to them, Why are ye so timorous? How is it that ye have not confidence?
Mark 8:21
And he said unto them, How is it that ye do not understand?
Luke 12:56
Ye hypocrites! ye know how to discern by experience from the appearance of the earth and of the sky; but how is it that ye do not discern this particular time?
John 8:43
Wherefore do ye not understand my speech? because ye cannot hear my word.
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