Here we find the reason that the resurrection might have been part of Corianton’s issues. Because it is connected to the coming of the Atoning Messiah, it has not yet happened. Thus Alma must explain this future event and its relationship to the present.
Textual: The language that we see in this verse about corruption and incorruption is a direct echo of Paul:
1 Corinthians 15:42
42 So also is the resurrection of the dead. It is sown in corruption; it is raised in incorruption:
The term corruption is meant to refer to the mortal body, and the specific reference is the decay of the body after death. When the body dies, it will corrupt. The incorruption is the resurrected body which is no longer subject to death and decay. That is the imagery of the text, the specific language is certainly indebted to the KJV version of Paul’s letter to the Corinthians.