Mark 8:17-19 NIV

[17] Aware of their discussion, Jesus asked them: “Why are you talking about having no bread? Do you still not see or understand? Are your hearts hardened? [18] Do you have eyes but fail to see, and ears but fail to hear? And don’t you remember? [19] When I broke the five loaves for the five thousand, how many basketfuls of pieces did you pick up?” “Twelve,” they replied.