Contradiction with Romans 3:23
John 1:50 implies belief leads to seeing great things, while Romans 3:23 emphasizes all have sinned, suggesting limitations without addressing belief.
Romans 3:23: For all have sinned, and come short of the glory of God;
Contradiction with Ecclesiastes 1:14
John 1:50 promises vision of great things, contradicting Ecclesiastes 1:14 where all deeds are seen as vanity and vexation of spirit.
Ecclesiastes 1:14: I have seen all the works that are done under the sun; and, behold, all [is] vanity and vexation of spirit.
Contradiction with Jeremiah 17:9
John 1:50 speaks to belief and vision, whereas Jeremiah 17:9 portrays the heart as deceitful and desperately wicked, indicating belief might be flawed.
Jeremiah 17:9: The heart [is] deceitful above all [things], and desperately wicked: who can know it?