Alma ends his counsel to his son. The plan of redemption works for Corianton as it does for us all. There is the opportunity to repent and learn to be better. That is the ultimate counsel. Alma tells Corianton: “I desire that ye should deny the justice of God no more.” This was one of the heresies that he had adopted, and therefore it is what Alma spent a lot of time on and what he desired that Corianton reject. The request was to no longer teach the ideas that he had proposed: that God would be merciful and that one did not need to worry about justice.
At the end, Alma calls Corianton “to preach the word unto this people.” This was the response that Alma, himself, had when he was converted from his apostate ways. He repented by preaching that what he had learned was the truth, thereby attempting to undo the wrongs he had done to those whom he had taught. Corianton is to do the same. In humility, he is to preach to those to whom he had previously preached, but this time to teach truth, just as Alma and the sons of Mosiah had done.
This ends a chapter in the 1830 edition of the Book of Mormon. It also ends the material that Mormon selected from Alma’s personal record. The following chapters return to the large plates as their primary source.