Read Mark 8:17 Using Other Translations
And when Jesus knew it, he saith unto them,Why reason ye, because ye have no bread? perceive ye not yet, neither understand? have ye your heart yet hardened?
And Jesus, aware of this, said to them, "Why are you discussing the fact that you have no bread? Do you not yet perceive or understand? Are your hearts hardened?
Jesus knew what they were saying, so he said, “Why are you arguing about having no bread? Don’t you know or understand even yet? Are your hearts too hard to take it in?