Ogdoad (Gnosticism)

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Gnostic concepts Adam kasia Adam pagria Aeon Anima mundi Archon Barbelo Demiurge Five Seals Gnosis Kenoma Luminary Manda Monad Ogdoad Pleroma Sophia Uthra World of Light World of Darkness Yaldabaoth
Gnostic sects and founders List of Gnostic sects Proto-Gnosticism Maghāriya Thomasines Judean / Israelite Adam Mandaeism Elksai Elkasaites Samaritan Baptist Dositheos Simon Magus (Simonians) Menander Quqites Christian Gnosticism Apelles Cerinthus Justin Marcion Marcionism Nicolaism Perates Saturninus Ophites Sethianism Basilides Basilideans Valentinus Valentinianism Marcus Marcosians Florinus Naassenes Thomasine Barbelo Borborites Carpocratians (Gnostic sect) Cerdo (Gnostic) Persian Gnosticism Mani Manichaeism Chinese Gnosticism Chinese Manichaeism Islamic Gnosticism Druze Nusayrism Modern Modern schools
Scriptures List of Gnostic texts Texts Nag Hammadi library Pseudo-Abdias Clementine literature Gnosticism and the New Testament Mandaean scriptures Codices Codex Tchacos Cologne Mani-Codex Askew Codex Bruce Codex Berlin Codex Codex Nasaraeus
Influenced by Apocalyptic literature Early Christianity Christology Docetism Paul and Gnosticism Merkabah mysticism Middle Platonism Philo Wisdom (personification)
Influence on Carl Jung Esoteric Christianity Christian theosophy Gnosticism in modern times Neoplatonism and Gnosticism Perennial philosophy Thelema Theosophy (Blavatskian) Western esotericism René Guénon Rudolf Steiner
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The concept of an Ogdoad (Greek: ὀγδοάς) appears in Gnostic systems of the early Christian era, and was further developed by the theologian Valentinus (ca. 160 AD).

The number eight plays an important part in Gnostic systems, and it is necessary to distinguish the different forms in which it appeared at different stages in the development of Gnosticism. The earliest Gnostic systems included a theory of seven heavens and a supercelestial region called the Ogdoad. Astronomical theories had introduced the concept of seven planetary spheres with an eighth above them, the sphere of the fixed stars.

In the system of Valentinus, the seven heavens, and even the region above them, were regarded as but the lowest and last stage of the exercise of creative power. Above them was the Pleroma, where were exhibited the first manifestations of the evolution of subordinate existence from the great First Principle.