Alma 28:11 - 28:14
Alma 28:11 And the bodies of many thousands are laid low in the earth, while the bodies of many thousands are moldering in heaps upon the face of the earth; yea, and many thousands are mourning for the loss of their kindred, because they have reason to fear, according to the promises of the Lord, that they are consigned to a state of endless wo.
The scene of death and destruction was horrendous. Many thousands had been buried yet still many thousands were lying in piles on the ground. The relatives of these dead were also suffering because of the loss of family members. Many of the living were fearful that these dead were not prepared to enter the spirit world and were in danger of experiencing the hell of the unprepared.
Alma 28:12 While many thousands of others truly mourn for the loss of their kindred, yet they rejoice and exult in the hope, and even know, according to the promises of the Lord, that they are raised to dwell at the right hand of God, in a state of never-ending happiness.
On the other hand, those whose relatives died and were righteous individuals would be living now in a state of happiness and with the God of the heavens forever.
Alma 28:13 And thus we see how great the inequality of man is because of sin and transgression, and the power of the devil, which comes by the cunning plans which he hath devised to ensnare the hearts of men.
Because of the devil and his desire to destroy all mankind there is a great division among God’s children. Some go to heaven because of their righteousness while others to hell because of their unrighteousness.
Alma 28:14 And thus we see the great call of diligence of men to labor in the vineyards of the Lord; and thus we see the great reason of sorrow, and also of rejoicing—sorrow because of death and destruction among men, and joy because of the light of Christ unto life.
This is proof of the need to proclaim the gospel to all peoples to avoid this inequity of reward in the afterlife. Our sorrows can either be for the wicked and their fate or for the righteous and their fate. One sorrow is for the suffering the wicked will have when they realize how they had been deceived or the happy sorrow for those who we know will be freed from the miseries of this world and are enjoying the joys of the next.