It is remarkable in its own right that the sons of Mosiah were able to convert thousands. It is even more remarkable that all the converts endured to the end. So powerful was their conversion process, that they could never turn their backs on the gospel. It is analogous to those who were present when the Savior appeared. At that time the people stayed faithful for 4 generations.
The parable of the sower demonstrates why this is so remarkable. In the parable, the seed which is the word of God falls among four different kinds of soil. This parable is typical of many new converts. Some are like the seed which fell in stony places, they hear the word and anon with joy receiveth it; Yet hath he not root in himself but dureth for a while: for when tribulation or persecution ariseth because of the word, by and by he is offended (Matt 13:20-21). Yet, none of these converts can be likened to the seed among the stony places. They were faithful in spite of terrible tribulations and persecutions—even to the laying down of their lives (Alma 24:21-22). Similarly, these new converts cannot be likened unto the seed which fell among the thorns, where the care of this world, and the deceitfulness of riches, choke the word, and he becometh unfruitful (Matt 13:22). They later migrate to the land of Jershon where, Mormon explains, they were distinguished for their zeal towards God, and also towards men; for they were perfectly honest and upright in all things; and they were firm in the faith of Christ, even unto the end (Alma 27:27).
Most missionaries have lost converts to tribulation, persecution, and the cares of the world. The sons of Mosiah were exceptions for all their converts were like the seed which fell into good ground. They heareth the word, and understandeth it; which also beareth fruit, and bringeth forth, some an hundredfold, some sixty, some thirty (Matt 13:23). The modern day prophets have encouraged us to do as much as we can to prepare the soil as did the sons of Mosiah, so that it will bear fruit—even an hundredfold.
Gordon B. Hinckley
“[missionaries have a responsibility to those they baptize to help them be] faithful and true, dyed-in-the-wool Latter-day Saints, with a conviction in their hearts concerning the truth of this great work. Now, this is going to become an issue all over the Church. It is a matter that deeply concerns me.”
"My brothers and sisters, please, I plead with you: Do all you can to see that those who you baptize are not baptisms only but solid true converts to this Church who will remain so.
“The Book of Mormon speaks of missionaries who taught so faithfully and so well that those they baptized never did fall away. (See Alma 23:6.) Now that ought to be our standard and our motto…I don’t believe there is any reason why a convert to this Church should leave again in a short time.” (Church News, 3/15/97)
Howard W. Hunter
“You may recall that the sons of Mosiah were so effective in their teaching, with ’the power of God working miracles in them,‘ that ’as many of the Lamanites as believed in their preaching, and were converted unto the Lord, never did fall away’ (Alma 23:6). We trust that your efforts will be as fruitful. As you teach potential converts, make sure they have a sufficient foundation of faith, understanding, conviction, and commitment to keep themselves faithful when they become members of the Church. Please be certain there is coordination with the ward mission leader and stake missionaries so that new converts are warmly fellowshipped by ward or branch members.” (Teachings of Howard W. Hunter, p. 252)
LeGrand Richards
“(Speaking of missionary work) How can a man judge the beauty of a building if all he ever sees is the plan or foundation of it, not seeing the final structure with its decorations and adornments? He cannot know much about what it is to be. We sometimes go into a home, say a few words, and bear our testimonies, and think we have fully warned that house and that it will stand condemned in the day of judgment if they receive not the gospel. I tell you, I believe there are thousands upon thousands of men and women who love the Lord enough that they would join the Church and bear his name if they could only see the picture as we see it, and we simply don’t take the time to tell them of it.” (G. Lamont Richards, LeGrand Richards Speaks, p. 108)
Ezra Taft Benson
"The Book of Mormon is to be ’a standard unto my people, which are of the house of Israel,’ said the Lord. (2 Nephi 29:2.) It is a standard we should heed and follow.
"In the twentieth section of the Doctrine and Covenants, the Lord devotes several verses to summarizing the vital truths which the Book of Mormon teaches. (See verses 17-36.) It speaks of God, the creation of man, the Fall, the Atonement, the ascension of Christ into heaven, prophets, faith, repentance, baptism, the Holy Ghost, endurance, prayer, justification and sanctification through grace, and loving and serving God.
We must know these essential truths. Aaron and Ammon and their brethren in the Book of Mormon taught these same kinds of truths to the Lamanite people (see Alma 18:22-39), who were ‘in the darkest abyss’ (Alma 26:3). After accepting these eternal truths, the Book of Mormon states, those converted Lamanites never did fall away. (See Alma 23:6.)
If our children and grandchildren are taught and heed these same truths, will they fall away? We best instruct them in the Book of Mormon at our dinner table, by our firesides, at their bedsides, and in our letters and phone calls—in all of our goings and comings." (A Witness and a Warning, p. 11)