Gnosis is the common Greek noun for knowledge. The term is used in various Hellenistic religions and philosophies. It is best known from Gnosticism, where it signifies a knowledge or insight into humanity’s real nature as divine, leading to the deliverance of the divine spark within humanity from the constraints of earthly existence.
Etymology
Gnosis is a feminine Greek noun which means "knowledge" or "awareness." It is often used for personal knowledge compared with intellectual knowledge, as with the Frenchconnaître compared with savoir, the Spanishconocer compared with saber, the Italianconoscere compared with sapere, the Germankennen rather than wissen, or the Modern Greek γνωρίζω compared with ξέρω. A related term is the adjective gnostikos, "cognitive", a reasonably common adjective in Classical Greek. Plato uses the plural adjective γνωστικοί – gnostikoi and the singular feminine adjective γνωστικὴ ἐπιστήμη – gnostike episteme in his Politikos where Gnostike episteme was also used to indicate one's aptitude. The terms do not appear to indicate any mystic, esoteric or hidden meaning in the works of Plato, but instead expressed a sort of higher intelligence and ability analogous to talent. In the Hellenistic era the term became associated with the mystery cults. In the Acts of Thomas, translated by G.R.S. Mead, the "motions of gnosis" are also referred to as "kingly motions". Gnosis is used throughout Greek philosophy as a technical term for experiential knowledge in contrast to theoretical knowledge or epistemology. The term is also related to the study of knowledge retention or memory, in relation to ontic or ontological, which is how something actually is rather than how something is captured and stored in the mind. Irenaeus used the phrase "knowledge falsely so-called" for the title of his book On the Detection and Overthrow of False Knowledge, that contains the adjective gnostikos, which is the source for the 17th-century English term "Gnosticism".
Gnosis in Orthodox Christian thought is the spiritual knowledge of a saint or mystically enlightenedhuman being. Within the cultures of the term's provenance Gnosis was a knowledge or insight into the infinite, divine and uncreated in all and above all, rather than knowledge strictly into the finite, natural or material world. Gnosis is transcendental as well as mature understanding. It indicates direct spiritual, experiential knowledge and intuitive knowledge, mystic rather than that from rational or reasoned thinking. Gnosis itself is gained through understanding at which one can arrive via inner experience or contemplation such as an internal epiphany of intuition and external epiphany such as the Theophany. In the Philokalia, it is emphasized that such knowledge is not secret knowledge but rather a maturing, transcendent form of knowledge derived from contemplation , since knowledge cannot truly be derived from knowledge, but rather, knowledge can only be derived from theoria. Knowledge, thus plays an important role in relation to theosis and theoria. Gnosis, as the proper use of the spiritual or noetic faculty plays an important role in Orthodox Christian theology. Its importance in the economy of salvation is discussed periodically in the Philokalia'' where as direct, personal knowledge of God it is distinguished from ordinary epistemological knowledge.
Gnosticism
Gnosticism originated in the late first century CE in nonrabbinical Jewish sects and early Christian sects. In the formation of Christianity, various sectarian groups, labeled "gnostics" by their opponents, emphasised spiritual knowledge of the Divine spark within, over faith in the teachings and traditions of the various communities of Christians. Gnosticism presents a distinction between the highest, unknowable God, and the demiurge “creator” of the material universe. The Gnostics considered the most essential part of the process of salvation to be this personal knowledge, in contrast to faith as an outlook in their world view along with faith in the ecclesiastical authority. They were regarded as heretics by the Fathers of the early church.