Why does Moroni suppose that he might insult Ammoron by calling him a “child of hell,” and then have Ammoron acquiesce to a demand that he exchange three for one? Moroni is attempting to negotiate from the most powerful position. He has said that he is ready to destroy Ammoron, so Ammoron’s trade of three for one would simply be the recognition that Moroni was in the stronger position, one that was able to dictate terms.