Still not with understanding
Mark 8:15 And he charged them, saying, Take heed, beware of the leaven of the Pharisees, and of the leaven of Herod.
Speaking of bread? Leaven permeates the entire loaf, causing the bread to puff up. Sin causes people to puff up too. A little can contaminate others. Beware of the leaven of the Pharisees, and of Herod, the world ruler. Beware of the thoughts and ideas of the world, give all to the Lord and follow him.
Mark 8:16 And they reasoned among themselves, saying, It is because we have no bread.
No, they see as men, not in the spirit. They must learn that Jesus usually has a deeper meaning in his words, a spiritual meaning and they must seek his mind.
Mark 8:17 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?
Mark 8:18 Having eyes, see ye not? and having ears, hear ye not? and do ye not remember?
Jesus was upset with them. Why did not even his closest followers yet see, nor hear, nor understand? Truth is, many do not like to speak of spiritual things...talking religion, they might say. Many are offended when we speak of spiritual things.
Mark 8:38 Whosoever therefore shall be ashamed of me and of my words in this adulterous and sinful generation; of him also shall the Son of man be ashamed, when he cometh in the glory of his Father with the holy angels.
Mark 8:19 When I brake the five loaves among five thousand, how many baskets full of fragments took ye up? They say unto him, Twelve.
Mark 8:20 And when the seven among four thousand, how many baskets full of fragments took ye up? And they said, Seven.
Mark 8:21 And he said unto them, How is it that ye do not understand?
Addressing their observation that there was no bread, Jesus seemed upset with their lack of faith. Had they so soon forgotten the two miracle feedings? This was Spiritual power and truth that God is able to provide. Why do they and we not get it? Why are we so lacking in faith, so spiritually blind?