Contradiction with Matthew 12:39
Jesus rebukes those who seek a sign, while in John 10:25 He speaks of having shown evidence through works.
Matthew 12:39: But he answered and said unto them, An evil and adulterous generation seeketh after a sign; and there shall no sign be given to it, but the sign of the prophet Jonas:
Contradiction with Mark 8:12
Jesus refuses to give a sign to that generation, contrasting with John 10:25 where He mentions His works as proof.
Mark 8:12: And he left them, and entering into the ship again departed to the other side.
Contradiction with Luke 23:8-9
Herod hopes to see a miracle, but Jesus does not perform one, unlike John 10:25 where His works testify.
Luke 23:8-9: And when Herod saw Jesus, he was exceeding glad: for he was desirous to see him of a long [season], because he had heard many things of him; and he hoped to have seen some miracle done by him.
Contradiction with John 12:37
Despite many signs, people still don't believe, contrasting with John 10:25's implication that works should lead to belief.
John 12:37: But though he had done so many miracles before them, yet they believed not on him:
Contradiction with John 2:18-19
Demands for a sign are met with an enigmatic response, differing from the straightforward affirmation of works in John 10:25.
John 2:18-19: Then answered the Jews and said unto him, What sign shewest thou unto us, seeing that thou doest these things?
Contradiction with Mark 6:5-6
Jesus is unable to do miracles due to disbelief, which contrasts with John 10:25 implying His works should lead to belief.
Mark 6:5-6: And he could there do no mighty work, save that he laid his hands upon a few sick folk, and healed [them].
Contradiction with Luke 11:29
Jesus calls the generation evil for seeking signs, suggesting a contradiction with the idea of works as evidence in John 10:25.
Luke 11:29: And when the people were gathered thick together, he began to say, This is an evil generation: they seek a sign; and there shall no sign be given it, but the sign of Jonas the prophet.