The Divine Light — Lux Aeterna
In Gnostic theology, light is the fundamental metaphor for divine reality — the Pleroma is light, the divine spark in humans is light, and Gnosis is the recognition of this light within and without.
Light (phos) is the primary metaphor for the divine in Gnostic texts — the Pleroma is characterized as a realm of pure, brilliant, uncreated light that stands in absolute contrast to the darkness and ignorance of the material world. The Gospel of Truth describes error (ignorance) as a fog and darkness from which Christ-as-Logos awakens the sleeping souls: 'The fog and darkness of ignorance was dissolved, and error was dissolved.' The Hymn of the Pearl (in the Acts of Thomas) narrates the journey of a divine spark through the dark world of matter and its eventual return to the kingdom of light. This light-darkness dualism is one of Gnosticism's most consistent features, appearing across Sethian, Valentinian, Mandaean, and Manichaean texts. For the Gnostic practitioner, the recognition that one IS light — that the divine spark within is literally a portion of the uncreated Pleroma-light — is the core transformative insight.
He who has knowledge of the truth is a free person, and the free person does not sin. The free person knows what sin is — but sin is committed by those in ignorance.
Philosopher Hans Jonas (The Gnostic Religion) identified the light-darkness dualism as the fundamental Gnostic experience — not merely a metaphor but a description of the existential condition of the pneumatic soul: an alien being of light stranded in a world of darkness.
Nag Hammadi Library