The other day, I re-read the story of the Anti-Nephi Lehis (great name!), and one of the morals really hit me.
The Anti-Nephi-Lehis were originally Lamanites (wicked guys). The freshly converted four sons of Mosiah embarked on an epic missionary trip to convert them.
Some of the Lamanites believed the gospel, and their change of heart was so huge that they decided to change their name to the Anti-Nephi-Lehis (Alma 23:17). In scripture, it's common for a name change to serve as a symbol for a dramatic conversion (Abram/Abraham, Jacob/Israel, Saul/Paul, Simon/Peter).
And, boy, was it dramatic.