Contradiction with Luke 23:21
They cried, saying, Crucify him, crucify him, whereas in Mark 15:9, Pilate suggests releasing Jesus.
Luke 23:21: But they cried, saying, Crucify [him], crucify him.
Contradiction with John 19:15
The chief priests answered, We have no king but Caesar, opposing Pilate's suggestion in Mark 15:9 to release Jesus, the King of the Jews.
John 19:15: But they cried out, Away with [him], away with [him], crucify him. Pilate saith unto them, Shall I crucify your King? The chief priests answered, We have no king but Caesar.
Contradiction with Matthew 27:22
The crowd says, Let him be crucified, contradicting Mark 15:9 where Pilate offers to release Jesus.
Matthew 27:22: Pilate saith unto them, What shall I do then with Jesus which is called Christ? [They] all say unto him, Let him be crucified.