Contradiction with Proverbs 26:4
This verse advises not to answer a fool according to his folly, contrasting with 2 Samuel 2:20 where there is direct engagement.
Proverbs 26:4: Answer not a fool according to his folly, lest thou also be like unto him.
Contradiction with Matthew 5:9
Promotes peacemakers, contradictory to the pursuit and conflict depicted in 2 Samuel 2:20.
Matthew 5:9: Blessed [are] the peacemakers: for they shall be called the children of God.
Contradiction with Romans 12:18
Encourages living peaceably with all men, contrasting with the pursuit and confrontation in 2 Samuel 2:20.
Romans 12:18: If it be possible, as much as lieth in you, live peaceably with all men.
Contradiction with Matthew 5:44
Advises love for enemies, while 2 Samuel 2:20 narrates a pursuit of an enemy.
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 Exodus 20:13
Commands against killing, whereas 2 Samuel 2:20 involves a context of battle and potential killing.
Exodus 20:13: Thou shalt not kill.