When Moroni received this letter, he became even angrier because he knew that Ammoron was fully aware of his own deceit; he knew that Ammoron understood there was no just reason for starting a war against the people of Nephi.
Show original text
Now it came to pass that when Moroni had received this epistle he was more angry, because he knew that Ammoron had a perfect knowledge of his fraud; yea, he knew that Ammoron knew that it was not a just cause that had caused him to wage a war against the people of Nephi.