Contradiction with Matthew 12:24
It describes the Pharisees claiming Jesus casts out demons by Beelzebub, contradicting the idea that He is a prophet as suggested in John 9:17.
Matthew 12:24: But when the Pharisees heard [it], they said, This [fellow] doth not cast out devils, but by Beelzebub the prince of the devils. [Beelzebub: Gr. Beelzebul]
Contradiction with John 10:20
Some say Jesus is mad and has a devil, which contradicts the acknowledgment of Him as a prophet in John 9:17.
John 10:20: And many of them said, He hath a devil, and is mad; why hear ye him?
Contradiction with John 5:18
The Jews seek to kill Jesus because He makes Himself equal with God, contrasting with merely being a prophet in John 9:17.
John 5:18: Therefore the Jews sought the more to kill him, because he not only had broken the sabbath, but said also that God was his Father, making himself equal with God.
Contradiction with Mark 3:21
Jesus' family claims He is out of His mind, contradicting the recognition of Him as a prophet in John 9:17.
Mark 3:21: And when his friends heard [of it], they went out to lay hold on him: for they said, He is beside himself. [friends: or, kinsmen]