Alma understands that there is a blessing in the ability to repent. For a people as hardened as the Ammonihahites, there must be an initial change before they may begin to repent. This blessing of vision so that they may be open to repentance is a gift from God, should they open their hearts enough to receive it. As he wraps up his argument, he restates his major theme. They are to repent. They are to repent so that they may avoid the second death.