The resurrection of the dead may not have been a topic that was part of the reasoning Corianton had used for his apostasy, but it was apparently something he did not understand. Since he does not appear to understand as much of the mission of the Atoning Messiah as he thought he did, Alma perceives that he also does not understand the resurrection. As part of Alma’s attempt to teach Corianton that which he needs to repent, Alma will also answer this issue for him.