Mark 8:21 Meaning

19When I brake the five loaves among five thousand, how many baskets full of fragments took ye up? They say unto him, Twelve.

20And when the seven among four thousand, how many baskets full of fragments took ye up? And they said, Seven.

21And he said unto them, How is it that ye do not understand?

22And he cometh to Bethsaida; and they bring a blind man unto him, and besought him to touch him.

23And he took the blind man by the hand, and led him out of the town; and when he had spit on his eyes, and put his hands upon him, he asked him if he saw ought.