The statement refers to the revelation known as Doctrine and Covenants 98, given to Joseph Smith in 1833. This revelation provided spiritual guidance to the Mormon (Latter-day Saint) Saints in Missouri, who were suffering from intense persecution, including mob violence and forced expulsion from their lands. The Saints were being physically and emotionally harmed, and their property was being destroyed, which naturally led to feelings of anger and a desire for retaliation. In response to this intense suffering, the revelation called for the Saints to renounce war, proclaim peace, support constitutional law, and seek peaceful solutions to their conflicts.