Contradiction with John 1:12
John 6:36 notes that people have seen Jesus and still do not believe, whereas John 1:12 states that those who receive Him are given the power to become the sons of God, implying belief from seeing.
John 1:12: But as many as received him, to them gave he power to become the sons of God, [even] to them that believe on his name: [power: or, the right, or, privilege]
Contradiction with Romans 1:20
John 6:36 suggests that seeing doesn’t guarantee belief, yet Romans 1:20 says that God’s invisible qualities are clearly seen and understood, leading to no excuse for disbelief.
Romans 1:20: For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, [even] his eternal power and Godhead; so that they are without excuse: [so...: or, that they may be]
Contradiction with John 3:11
John 6:36 implies disbelief despite witnessing, but John 3:11 suggests the importance of the testimony of what has been seen and heard.
John 3:11: Verily, verily, I say unto thee, We speak that we do know, and testify that we have seen; and ye receive not our witness.
Contradiction with John 9:37-38
John 6:36 indicates seeing Jesus isn't enough to believe, but John 9:37-38 shows an example where seeing led to belief and worship.
John 9:37-38: And Jesus said unto him, Thou hast both seen him, and it is he that talketh with thee.
Contradiction with Matthew 11:21
John 6:36 suggests lack of belief despite miracles, while Matthew 11:21 mentions that witnessing miracles could lead cities to repentance.
Matthew 11:21: Woe unto thee, Chorazin! woe unto thee, Bethsaida! for if the mighty works, which were done in you, had been done in Tyre and Sidon, they would have repented long ago in sackcloth and ashes.
Contradiction with Luke 16:31
John 6:36 speaks of disbelief in spite of witnessing Jesus, yet Luke 16:31 discusses disbelief even if someone rises from the dead, contrasting the effectiveness of Jesus' presence.
Luke 16:31: And he said unto him, If they hear not Moses and the prophets, neither will they be persuaded, though one rose from the dead.
Contradiction with Hebrews 3:19
John 6:36 shows people seeing yet not believing, whereas Hebrews 3:19 highlights unbelief as preventing entry into rest, without specifying sight.
Hebrews 3:19: So we see that they could not enter in because of unbelief.
Contradiction with Matthew 12:39
John 6:36 shows disbelief despite seeing, but Matthew 12:39 indicates that the only sign given to a wicked generation is the sign of Jonas, implying signs would suffice.
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 John 20:29
John 6:36 addresses disbelief despite seeing, yet John 20:29 praises those who believe without seeing, creating a distinction in types of belief.
John 20:29: Jesus saith unto him, Thomas, because thou hast seen me, thou hast believed: blessed [are] they that have not seen, and [yet] have believed.
Contradiction with Luke 24:11
John 6:36 highlights disbelief despite presence, while Luke 24:11 shows disbelief of the women's witness of the resurrection, which further confirms disbelief even after witness.
Luke 24:11: And their words seemed to them as idle tales, and they believed them not.