Contradiction with John 7:5
This verse indicates that even Jesus' own brothers did not believe in him, contrasting with the belief spread by the crowd mentioned in John 12:17.
John 7:5: For neither did his brethren believe in him.
Contradiction with Matthew 13:58
This verse shows that due to unbelief, Jesus did not do many mighty works, whereas John 12:17 highlights belief due to a miracle.
Matthew 13:58: And he did not many mighty works there because of their unbelief.
Contradiction with Mark 8:30
Here, Jesus instructs his disciples not to tell anyone about him, which contrasts with the public testimony in John 12:17.
Mark 8:30: And he began to teach them, that the Son of man must suffer many things, and be rejected of the elders, and [of] the chief priests, and scribes, and be killed, and after three days rise again.
Contradiction with Luke 9:21
Similar to Mark 8:30, Jesus charges his disciples to keep his identity secret, unlike the public declaration in John 12:17.
Luke 9:21: And he straitly charged them, and commanded [them] to tell no man that thing;
Contradiction with John 6:66
This verse notes that many disciples turned away, contradicting the spreading of belief described in John 12:17.
John 6:66: From that [time] many of his disciples went back, and walked no more with him.
Contradiction with Matthew 16:20
Jesus tells his disciples not to reveal he is the Christ, differing from the public sharing in John 12:17.
Matthew 16:20: Then charged he his disciples that they should tell no man that he was Jesus the Christ.