Contradiction with Exodus 20:13
This verse commands "Thou shalt not kill," while 2 Samuel 21:12 describes actions resulting from past killings.
Exodus 20:13: Thou shalt not kill.
Contradiction with Galatians 6:7
This verse states "whatsoever a man soweth, that shall he also reap," suggesting consequences for actions, which can appear contradictory when applied to the justification for retrieval in 2 Samuel 21:12.
Galatians 6:7: Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap.
Contradiction with Proverbs 21:15
This verse states that justice is a joy to the righteous but terror to evildoers, potentially conflicting with the actions described in 2 Samuel 21:12 as being retrospective justice.
Proverbs 21:15: [It is] joy to the just to do judgment: but destruction [shall be] to the workers of iniquity.
Contradiction with Matthew 5:44
Jesus instructs to "love your enemies," which may be seen as contrary to the act of vengeance or retribution reflected in the events surrounding 2 Samuel 21:12.
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 advises against seeking personal vengeance, whereas 2 Samuel 21:12 involves an act of retrieval related to such themes.
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.