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

Mark 4:40 - And he said unto them, Why are ye so fearful? how is it that ye have no faith?   (Verses like Mark 4:40)

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

Luke 12:56 - Ye hypocrites, ye can discern the face of the sky and of the earth; but how is it that ye do not discern this time?   (Verses like Luke 12:56)

John 8:43 - Why do ye not understand my speech? even because ye cannot hear my word.   (Verses like John 8:43)