Matthew 13:51
Have you understood all this?" Jesus asked. "Yes," they answered.
Matthew 15:16-17
"What, do even you understand nothing yet?" Jesus exclaimed.
Matthew 16:11
How is it that you do not see that I was not speaking about bread? Be on your guard against the leaven of the Pharisees and Sadducees."
Mark 4:13
You do not know the meaning of this parable!" he went on; "Then how will you understand all the other parables?
Luke 9:45
But the disciples did not understand the meaning of this; it had been concealed from them so that they did not see it, and they were afraid to question him as to what he meant.
Acts 8:30
So Philip ran up, and he heard the Abyssinian reading the Prophet Isaiah. "Do you understand what you are reading?" he asked.