Third source:

The spirit is a living, conscious, light-giving entity; a comprehensive law or command of God furnished with external existence and has the potential to achieve universality. Even natural laws, which are considerably weak when compared to the spirit, have stability and permanence, let alone the law embodied by the spirit. All kinds of existence, although subject to change, possess a permanent dimension that remains unaltered through all stages of life. Thus each person is an individual and, on account of his or her comprehensive nature, universal consciousness, and all-embracing imagination, like a species. A law that operates upon humanity also applies to the individual.

The Majestic Creator endowed us with a sublime nature and caused us to be comprehensive mirrors through which His Names and Attributes are reflected. He has charged us with a universal duty of worship. Given this, each individual's spiritual reality remains alive forever by Divine permission, even though its form undergoes countless changes. Thus the human spirit, which constitutes our conscious, living element, is eternal and has been made so by God's command and permission.