Mark 8

“I have compassion on the multitude, because they have now continued with Me three days and have nothing to eat...When I broke the five loaves for the five thousand, how many baskets full of fragments did you take up?” They said to Him, “Twelve.” “Also, when I broke the seven for the four thousand, how many large baskets full of fragments did you take up?” And they said, “Seven.”  So He said to them, “How is it you do not understand?” vv.2,19-21

Read chapter 8.
The multitude have been with Jesus for three days and not even their growling stomachs made them leave His presence.  Truly He is the Bread of life.  The crave Him more than they do food.  Can you say you crave Jesus more than you crave chocolate or steak or whatever delicious food you love?
We then see Jesus teaching the disciples after feed the multitude for the second time now. He shows that His miracles aren't some math equation: 
                     5 loaves for 5,000 = 12 leftover baskets
                     7 loaves for 4,000 = 7 leftover baskets
So the less loaves fed the greater crowd and the fewer loaves fed the smaller crowd.  The point was to show God's power.  He could have fed them with only a morsel of bread and had leftovers.  As Jesus was with the 12 they seemed to have to relearn the lesson over and over again if the situation changed so here the Lord is reminding them what they've seen and believed and in this same chapter call Him the Christ.  What lesson do you seem to be learning time and time again throughout different times in life?  How do you understand God's power?  How do you limit it?