In response to the disciples confusion, Jesus tries to make things clear for them. Have they forgotten that he has the power to multiply bread? Have they forgotten that he is the good shepherd (Psalm 23:1–6) who cares for people? Do they see the miracles but fail to understand what it means about Jesus? Do they hear his words but fail to listen to what he says? Are their hearts so hardened? In saying these things, Jesus uses similar language to that found in Mark 4:12. It appears as if the disciples are becoming like outsiders rather than insiders.
17 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?