Mark 4:40

4:40 And he said to them, “Why are you cowardly? Do you still not have faith?”

Mark 8:21

8:21 Then he said to them, “Do you still not understand?”

Luke 12:56

12:56 You hypocrites! You know how to interpret the appearance of the earth and the sky, but how can you not know how to interpret the present time?

John 8:43

8:43 Why don’t you understand what I am saying? It is because you cannot accept my teaching.