Contradiction with Proverbs 3:5
John 9:26 involves questioning and seeking understanding, while Proverbs 3:5 advises trust in the Lord without relying on one's own understanding.
Proverbs 3:5: Trust in the LORD with all thine heart; and lean not unto thine own understanding.
Contradiction with Mark 8:18
John 9:26 is about questioning a miraculous event, whereas Mark 8:18 criticizes those who have eyes and ears but fail to perceive and understand.
Mark 8:18: When I brake the five loaves among five thousand, how many baskets full of fragments took ye up? They say unto him, Twelve.
Contradiction with 1 Corinthians 2:14
John 9:26 involves human questioning of a miracle, while 1 Corinthians 2:14 indicates that spiritual truths are not understood by natural man without the Spirit.
1 Corinthians 2:14: But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know [them], because they are spiritually discerned.
Contradiction with James 1:5
John 9:26 shows confusion and need for explanation, while James 1:5 encourages asking God for wisdom who gives generously to all without finding fault.
James 1:5: If any of you lack wisdom, let him ask of God, that giveth to all [men] liberally, and upbraideth not; and it shall be given him.
Contradiction with Matthew 13:13
John 9:26 focuses on questioning a miracle, whereas Matthew 13:13 explains that some would see yet not truly perceive or understand.
Matthew 13:13: Therefore speak I to them in parables: because they seeing see not; and hearing they hear not, neither do they understand.