Contradiction with Romans 3:23
This verse contradicts 2 Corinthians 13:6 by stating that all have sinned, whereas 2 Corinthians 13:6 implies self-assessment of passing the faith test.
Romans 3:23: For all have sinned, and come short of the glory of God;
Contradiction with Proverbs 20:9
This verse questions who can say they have made their heart pure and are free from sin, contrasting with Paul's expectation that the Corinthians will be found not reprobate.
Proverbs 20:9: Who can say, I have made my heart clean, I am pure from my sin?
Contradiction with Isaiah 64:6
Describes all our righteous acts as filthy rags, in contradiction to the confidence in righteousness expressed in 2 Corinthians 13:6.
Isaiah 64:6: But we are all as an unclean [thing], and all our righteousnesses [are] as filthy rags; and we all do fade as a leaf; and our iniquities, like the wind, have taken us away.
Contradiction with 1 John 1:8
Claims that if we say we have no sin, we deceive ourselves, contradicting the suggestion that believers will pass the test in 2 Corinthians 13:6.
1 John 1:8: If we say that we have no sin, we deceive ourselves, and the truth is not in us.