Mark 8:17-18

8:17 When he learned of this, Jesus said to them, “Why are you arguing about having no bread? Do you still not see or understand? Have your hearts been hardened? 8:18 Though you have eyes, don’t you see? And though you have ears, can’t you hear? Don’t you remember?

Mark 8:21

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