Contradiction with Proverbs 27:5
Open rebuke is better than secret love, which suggests that correction should be direct and explicit, whereas 2 Corinthians 13:10 speaks of using authority for edification, not to display harshness.
Proverbs 27:5: Open rebuke [is] better than secret love.
Contradiction with Hebrews 12:6
For whom the Lord loveth he chasteneth, which suggests that correction and chastening are a sign of love, potentially contradicting the gentle approach implied in 2 Corinthians 13:10.
Hebrews 12:6: For whom the Lord loveth he chasteneth, and scourgeth every son whom he receiveth.
Contradiction with Revelation 3:19
As many as I love, I rebuke and chasten, suggesting a confrontation style, while 2 Corinthians 13:10 focuses on edifying without using harshness.
Revelation 3:19: As many as I love, I rebuke and chasten: be zealous therefore, and repent.
Contradiction with Matthew 18:15
If thy brother shall trespass against thee, go and tell him his fault, indicating a direct approach to dealing with wrongs, which contrasts with the more subtle edificational authority mentioned in 2 Corinthians 13:10.
Matthew 18:15: Moreover if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: if he shall hear thee, thou hast gained thy brother.
Contradiction with Titus 1:13
Wherefore rebuke them sharply, that they may be sound in the faith, seeming to emphasize stern correction as opposed to the emphasis on gentleness in 2 Corinthians 13:10.
Titus 1:13: This witness is true. Wherefore rebuke them sharply, that they may be sound in the faith;