Contradiction with Matthew 4:4
Emphasizes spiritual sustenance over physical satisfaction, while Mark 8:8 describes physical satiation.
Matthew 4:4: But he answered and said, It is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God.
Contradiction with John 4:34
Jesus speaks of his food being to do the will of God, which contrasts with the physical feeding in Mark 8:8.
John 4:34: Jesus saith unto them, My meat is to do the will of him that sent me, and to finish his work.
Contradiction with Philippians 4:12
Paul discusses contentment in hunger and need, contrasting the fullness experienced in Mark 8:8.
Philippians 4:12: I know both how to be abased, and I know how to abound: every where and in all things I am instructed both to be full and to be hungry, both to abound and to suffer need.