Contradiction with Psalm 14:1
1 Samuel 25:25 speaks about someone's folly and disregard, but Psalm 14:1 suggests there are many who believe themselves wise while denying God.
Psalm 14:1: [To the chief Musician, [A Psalm] of David.] The fool hath said in his heart, [There is] no God. They are corrupt, they have done abominable works, [there is] none that doeth good.
Contradiction with Proverbs 26:4
1 Samuel 25:25 suggests addressing a fool directly whereas Proverbs 26:4 advises against engaging with a fool according to their folly.
Proverbs 26:4: Answer not a fool according to his folly, lest thou also be like unto him.
Contradiction with Proverbs 26:5
This verse would suggest answering a fool according to their folly, creating a contradiction in approach compared to 1 Samuel 25:25's context.
Proverbs 26:5: Answer a fool according to his folly, lest he be wise in his own conceit. [conceit: Heb. eyes]
Contradiction with Matthew 5:22
While 1 Samuel 25:25 might be dismissive of folly, Matthew 5:22 warns against calling someone "fool" due to moral and ethical standards.
Matthew 5:22: But I say unto you, That whosoever is angry with his brother without a cause shall be in danger of the judgment: and whosoever shall say to his brother, Raca, shall be in danger of the council: but whosoever shall say, Thou fool, shall be in danger of hell fire. [Raca: that is, Vain fellow]
Contradiction with James 1:19
1 Samuel 25:25 deals with a hasty judgment of folly, while James 1:19 advises being slow to speak and quick to listen, contrary to quick judgments.
James 1:19: Wherefore, my beloved brethren, let every man be swift to hear, slow to speak, slow to wrath: