Gnosticism (from Ancient Greek: γνωστικός gnostikos, "having knowledge", from γνῶσις gnōsis, knowledge) is a modern name for a variety of ancient religious ideas and systems, originating in Jewish-Christian milieus in the first and second century AD. These systems believed that the material world is created by an emanation of the highest God, trapping the divine spark within the human body. This divine spark could be liberated by gnosis. Some of the core teachings include the following:
All matter is evil, and the non-material, spirit-realm is good.
There is an unknowable God, who gave rise to many lesser spirit beings called Aeons.
One evil, lower spirit being is the creator who made the universe.
Gnosticism does not deal with 'sin', only ignorance.
To achieve salvation, one needs to get in touch with secret knowledge.
The Gnostic ideas and systems flourished in the Mediterranean world in the second century AD, in conjunction with and influenced by the early Christian movements and Middle Platonism. After the second century, a decline set in, but Gnosticism persisted throughout the centuries as an undercurrent of western culture, remanifesting with the Renaissance as Western esotericism, taking prominence with modern spirituality. In the Persian Empire, Gnosticism spread as far as China with Manicheism, while Mandaeism is still alive in Iraq.