Contradiction with Matthew 27:11
This verse states that Jesus conversed with Pilate, while in John 19:9, Jesus remains silent when questioned by Pilate.
Matthew 27:11: And Jesus stood before the governor: and the governor asked him, saying, Art thou the King of the Jews? And Jesus said unto him, Thou sayest.
Contradiction with Mark 15:5
Mark notes that Jesus answered nothing more to Pilate, implying prior conversation, contrary to John 19:9 where silence is maintained.
Mark 15:5: But Jesus yet answered nothing; so that Pilate marvelled.
Contradiction with Luke 23:3
Jesus affirms to Pilate when asked if He is the King of the Jews, contrasting with His silence in John 19:9.
Luke 23:3: And Pilate asked him, saying, Art thou the King of the Jews? And he answered him and said, Thou sayest [it].