Rhetorical: Amulek nicely creates a strong argument. The destruction comes because of the voices of the people, such as the lawyers. However, there are righteous among them that are not represented by the voice of the people. These righteous have held back the destruction. Thus the destruction could be eliminated forever if all would repent and become righteous, thereby increasing the number of people praying to hold back the destruction, and tipping the voice of the people towards righteousness, which would therefore eliminate the destruction that Mosiah said would come when the voice of the people chose evil. It is a rather complete argument.