Contradiction with Proverbs 12:21
This verse states that no evil will happen to the righteous, while 2 Chronicles 18:34 describes the death of King Ahab in battle, despite his attempt to avoid it, which can be seen as evil befalling him.
Proverbs 12:21: There shall no evil happen to the just: but the wicked shall be filled with mischief.
Contradiction with Romans 8:28
This verse implies that all things work together for good to those who love God, while 2 Chronicles 18:34 narrates a tragic event that seems contrary to any form of good.
Romans 8:28: And we know that all things work together for good to them that love God, to them who are the called according to [his] purpose.