Contradiction with Exodus 20:13
This verse, which states "Thou shalt not kill," contradicts the actions in 2 Kings 10:5 where there is obedience to someone commanding the killing of the sons of Ahab.
Exodus 20:13: Thou shalt not kill.
Contradiction with Matthew 5:44
Jesus instructs to "Love your enemies," which contradicts the submission and treachery suggested in 2 Kings 10:5.
Matthew 5:44: But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
Contradiction with Romans 12:19
This verse counsels against seeking personal vengeance, whereas 2 Kings 10:5 can imply participating in the violent wishes of Jehu against Ahab’s family.
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 Proverbs 24:17
This verse advises not to rejoice when your enemy falls, contrasting with the submission in 2 Kings 10:5 that could accommodate such rejoicing.
Proverbs 24:17: Rejoice not when thine enemy falleth, and let not thine heart be glad when he stumbleth:
Contradiction with Proverbs 15:1
Advises a soft answer to turn away wrath, contradicting the violent response seen in obeying the command of 2 Kings 10:5.
Proverbs 15:1: A soft answer turneth away wrath: but grievous words stir up anger.
Contradiction with James 4:7
Encourages resisting the devil, which contradicts the act of complying with Jehu’s potentially unrighteous demands in 2 Kings 10:5.
James 4:7: Submit yourselves therefore to God. Resist the devil, and he will flee from you.
Contradiction with Isaiah 1:17
Speaks to seeking justice and defending the oppressed, which contrasts with the submission to potentially unjust orders in 2 Kings 10:5.
Isaiah 1:17: Learn to do well; seek judgment, relieve the oppressed, judge the fatherless, plead for the widow. [relieve: or, righten]