Mark 7:18

And He says to them, Are you still without understanding? Do you not know that everything external entering into a man is not able to defile him?

Matthew 15:16-17

And Jesus said, Are you indeed still without understanding?

Matthew 16:11

How do you not understand that I did not speak to you concerning bread, to beware of the leaven of the Pharisees and the Sadducees.

Mark 4:13

And He says to them, Do you not understand this parable? and how will you know all parables?

Luke 24:25

And He said to them, O ye foolish, and slow in heart to believe in all those things which the prophet spoke!

John 3:10

Jesus responded and said to him, Art thou a teacher of Israel and knowest not these things?

1 Corinthians 3:2

I have fed you with milk, not with meat; for you were not yet able. But ye are not now yet able:

Hebrews 5:11

Concerning whom there is much word to us, and difficult to speak, since you are dull of hearing.

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