When a people choose iniquity and fall into transgression, they face destruction. Nephi, son of Lehi, taught that “as one generation hath been destroyed among the Jews because of iniquity, even so have they been destroyed from generation to generation according to their iniquities; and never hath any of them been destroyed save it were foretold them by the prophets of the Lord” (2 Nephi 25:9). Alma and Amulek were prophets. They were sent to warn the people of Ammonihah of their imminent destruction if they did not repent.