Initially, the period had an effect of strengthening spiritual fervor and helped them to maintain their Shaker principles of simplicity, utility and honesty. The spiritual manifestations were particularly embraced by the younger members of the sect. Over time, though, the older members were increasingly disenchanted. In 1845 the sect revised their guiding edicts, the Millennial Laws, making them stricter. The laws dictated household and life practices, such as limiting mirror size and defining the allowed color of bed linens. After the revision of laws, some "believers" left the Shakers.