This is one of the many places in the Book of Mormon that teach the doctrine of a universal resurrection. But I love how explicit Amulek is about how universal this resurrection will be:
“Now, this restoration shall come to all, both old and young, both bond and free, both male and female, both the wicked and the righteous; and even there shall not so much as a hair of their heads be lost; but every thing shall be restored to its perfect frame, as it is now, or in the body, and shall be brought and be arraigned before the bar of Christ the Son, and God the Father, and the Holy Spirit, which is one Eternal God, to be judged according to their works, whether they be good or whether they be evil.”
Ultimately, all mankind is equal in one respect. We will all die. And because of Christ we will all live again. This is the universal blessing of Christ’s atonement.
What this chapter also teaches with great clarity is the fact that those who are not repentant cannot be saved because they do not experience the individual blessings of the atonement. God “cannot save them in their sins.” There is no way that God can bend the rules and allow them into his presence in a sinful state. Instead, “the wicked remain as though there had been no redemption made, except it be the loosing of the bands of death.” And those who did not repent will stand before God with a “bright recollection of all [their] guilt.”
It is only to the degree that we allow Christ’s atonement to operate in our lives that we can be cleansed. Even as disciples of Christ, we will bear the guilt of our sins until we let him in to heal and cleanse us. It is only through his power that real and lasting cleansing and change can happen.
One final thought, we read in the Book of Mormon that the people of Ammonihah were followers of Nehor. So it makes a lot of sense that they would question Alma and Amulek about these doctrines. In their mind, this was the central pillar of oppression in the Christian faith–namely that not everyone would be saved. And it is clear that Zeezrom chooses this line of inquiry because it is likely to elicit the most anger and disdain from followers of Nehor.