Contradiction with 2 Chronicles 20:17
This verse states that the people do not need to fight in the battle, contradicting 2 Chronicles 23:20 where forces are set and stationed in anticipation of fighting.
2 Chronicles 20:17: Ye shall not [need] to fight in this [battle]: set yourselves, stand ye [still], and see the salvation of the LORD with you, O Judah and Jerusalem: fear not, nor be dismayed; to morrow go out against them: for the LORD [will be] with you.
Contradiction with Numbers 33:55
Here, God warns that not driving out the inhabitants will lead to trouble, contradicting the proactive establishment of officials over the land in 2 Chronicles 23:20.
Numbers 33:55: But if ye will not drive out the inhabitants of the land from before you; then it shall come to pass, that those which ye let remain of them [shall be] pricks in your eyes, and thorns in your sides, and shall vex you in the land wherein ye dwell.
Contradiction with Matthew 5:44
Jesus instructs to love your enemies, which contrasts the militaristic and authoritative establishment in 2 Chronicles 23:20.
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 taking revenge oneself, contradicting the establishment of forces for defense or retribution in 2 Chronicles 23:20.
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 Isaiah 2:4
This prophecy of peace and turning swords into plowshares contradicts the military organization and readiness for conflict implied in 2 Chronicles 23:20.
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]
Contradiction with Luke 6:27-29
Jesus encourages turning the other cheek, in contrast to the military preparations mentioned in 2 Chronicles 23:20.
Luke 6:27-29: But I say unto you which hear, Love your enemies, do good to them which hate you,
Contradiction with Proverbs 15:1
Suggests a gentle answer turns away wrath, indirectly contradicting the call to arms and defense in 2 Chronicles 23:20.
Proverbs 15:1: A soft answer turneth away wrath: but grievous words stir up anger.