Contradiction with Exodus 20:13
This verse, which states "Thou shalt not kill," contradicts the act of killing that is implied in 2 Kings 3:26 where the king sacrifices his son.
Exodus 20:13: Thou shalt not kill.
Contradiction with Matthew 5:44
Instructing to love your enemies and bless those who curse you contradicts the violence and hostility depicted in 2 Kings 3:26.
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 12:21
This verse promotes overcoming evil with good, contrasting with the warlike actions described in 2 Kings 3:26.
Romans 12:21: Be not overcome of evil, but overcome evil with good.
Contradiction with Proverbs 25:21-22
Advises feeding your enemy if he is hungry, contradicting the hostility and aggression found in 2 Kings 3:26.
Proverbs 25:21-22: If thine enemy be hungry, give him bread to eat; and if he be thirsty, give him water to drink:
Contradiction with Isaiah 2:4
This prophecy of nations not lifting sword against nation again contradicts the battle context of 2 Kings 3:26.
Isaiah 2:4: And he shall judge among the nations, and shall rebuke many people: and they shall beat their swords into plowshares, and their spears into pruninghooks: nation shall not lift up sword against nation, neither shall they learn war any more. [pruninghooks: or, scythes]