Contradiction with Matthew 7:1
"Judge not, that ye be not judged" suggests refraining from judgment, while Proverbs 24:25 praises those who rebuke the wicked.
Matthew 7:1: Judge not, that ye be not judged.
Contradiction with Romans 12:19
"Dearly beloved, avenge not yourselves" advises against taking action against wrongdoers, contrasting with the commendation of rebuke in Proverbs 24:25.
Romans 12:19: Dearly beloved, avenge not yourselves, but [rather] give place unto wrath: for it is written, Vengeance [is] mine; I will repay, saith the Lord.
Contradiction with James 4:11
"Speak not evil one of another, brethren" contradicts the act of rebuking the wicked as honored in Proverbs 24:25.
James 4:11: Speak not evil one of another, brethren. He that speaketh evil of [his] brother, and judgeth his brother, speaketh evil of the law, and judgeth the law: but if thou judge the law, thou art not a doer of the law, but a judge.
Contradiction with Luke 6:37
"Judge not, and ye shall not be judged" opposes the rebuke of the wicked mentioned in Proverbs 24:25.
Luke 6:37: Judge not, and ye shall not be judged: condemn not, and ye shall not be condemned: forgive, and ye shall be forgiven: