Ammon (Book of Mormon)

In the Book of Mormon, Ammon is a prominent Nephite missionary and a son of King Mosiah. He originally opposes the church but, along with his brothers and Alma the Younger, is miraculously converted. Following his conversion he serves a mission to the Lamanites and converts Lamoni and his people.

According to Hugh Nibley, Amon (or Ammon) (Mosiah 7:3) is the most common proper name in the Book of Mormon, and also the most common and most revered name in the Egyptian Empire (which embraced Palestine at Lehi's time). The reverence shown the name of Amon in no way indicates the slightest concession to paganism on the part of the Jews, since Amon is no less than the Egyptian version of their own universal, one, creator-God, the Great Spirit (see Alma 18:4).

As one of the four sons of King Mosiah, Ammon has tremendous influence among his people, the Nephites. He rejects the Church and attempts to turn the people from the teachings of the prophets. Because of the fervent prayers of their parents, Alma the Younger and the four sons of Mosiah have a conversion experience much like that of Paul the Apostle; an angel appears to them on the road and rebukes them for their wickedness. The shock puts Alma the Younger into an insensible state for a time; the specific effect on Ammon is not described, but he becomes fully converted to the Gospel and desires to serve as a missionary to the Lamanites.

Ammon and his brothers spend several years teaching the Gospel to the Lamanites. Ammon goes first to the land of Ishmael. He is captured by the Lamanites and taken before their king, Lamoni. Lamoni asks his purpose in straying so far from Nephite lands. When Ammon replies that he wants only to serve, the king, impressed, offers him one of his daughters. Ammon refuses but becomes a servant in the king's household, assisting others in caring for the king's flocks.

When bandits attack, Ammon directs the others to encircle the flock so they will not scatter and confronts the bandits. Fellow servants tell him they will be killed if the bandits acquire any of the flock. As he is seemingly outnumbered, the thieves attack Ammon. From a distance he kills several with his sling and then in hand-to-hand combat cuts off the arms of every robber who attacks him. Ammon's defense of the King's flock convinces the servants and the king that he is favored by God. The king, his household, and the entire kingdom convert to the Gospel.

...
Wikipedia