Notwithstanding the great good the sons of Mosiah were doing for the Nephites in their own land, they were not content to confine their labors to the dwellers in Zarahemla only.
The names of these brothers were Aaron, Ammon, Omner, and Himni. These names are given according to the apparent age of each, beginning with the eldest.
They longed to carry the message of Salvation to the benighted Lamanites. Ignoring the dangers and scorning the pains which such a mission would likely inflict, they plea for many days with their father to give his permission for them to go to the Land of Lehi-Nephi.
They envisioned the hope that they could dispel the old traditions of the Lamanites that had caused so much hatred and bloodshed between them and the Nephites. The thoughts of these young men lifted them to realms of godly love for their fellowmen from which they saw the great responsibility put upon them by their own marvelous conversion. They desired to take to their dark-skinned brethren "the knowledge of the Lord their God." They also saw in their labors the end to contention and warfare which for centuries had despoiled the beauties and the bounties of the land which the Lord had given them for an inheritance.
The thought that some of their brethren, the Lamanites, would be lost through not having been given the chance to hear the glorious message of Salvation, and that, therefore, the Lamanites "should endure endless torment did cause them to quake and tremble."
Notwithstanding that in the past the actions of these brothers put upon them the mark of vile and ruthless sinners, he who chronicled their times noted that the Lord in infinite mercy, saw fit to preserve them.