Soul can never die

1. Alma 12: 20
     20 But there was one Antionah, who was a chief ruler among them, came forth and said unto him: What is this that thou hast said, that man should rise from the dead and be changed from this mortal to an immortal state, that the soul can never die?
2. Alma 42: 9
     9 Therefore, as the soul could never die, and the fall had brought upon all mankind a spiritual death as well as a temporal, that is, they were cut off from the presence of the Lord, it was expedient that mankind should be reclaimed from this spiritual death.