The manipulation of doctrine can lead good people to do bad things. For instance, the belief that there is scarcity can drive good people to act unethically. Similarly, altering the understanding of eternal marriage can weaken the foundation of families. However, promoting a strong doctrine can lead to spiritual purity and unity, creating a defense and refuge for the faithful in the last days. By relying on God and advancing in faith, the Saints can create a stronghold that discourages conflict and promotes peace.