New Revised Standard Version
Then he said to them, “Do you not yet understand?”

Contemporary English Version
"Don't you know what I am talking about by now?" Jesus asked.

New American Bible
He said to them, “Do you still not understand?”

Douay-Rheims Bible
And he said to them: How do you not yet understand?

And he said to them: How do you not yet understand?

How.

Mark 8:12,17 And sighing deeply in spirit, he saith: Why doth this generation seek a sign? Amen, I say to you, a sign shall not be given to this generation. . . .

Mark 6:52 For they understood not concerning the loaves; for their heart was blinded.

Mark 9:19 Who answering them, said: O incredulous generation, how long shall I be with you? How long shall I suffer you? Bring him unto me.

Psalm 94:8 Understand, ye senseless among the people: and, you fools, be wise at last.

Matthew 16:11,12 Why do you not understand that it was not concerning bread I said to you: Beware of the leaven of the Pharisees and Sadducees? . . .

John 14:9 Jesus saith to him: Have I been so long a time with you and have you not known me? Philip, he that seeth me seeth the Father also. How sayest thou: Shew us the Father?

1 Corinthians 6:5 I speak to your shame. Is it so that there is not among you any one wise man that is able to judge between his brethren?

1 Corinthians 15:34 Awake, ye just, and sin not. For some have not the knowledge of God. I speak it to your shame.