>>41444164 (OP)
Note that Gnosis shares a root with Sanskrit word Jnana. Both of them mean “knowledge.” According to linguists, it’s from a presumed Proto-Indo-European root like “jna”, for knowing/knowledge. Gnostic is also the adjectival form for the Ancient Greek Nous, or Mind.
The root of Gnosticism, I believe, is that it simultaneously reveres Christ as indeed emissary and incarnation of God in human form, and also that He essentially taught something like Jnana Yoga to His disciples (yogic/meditative path having to do with knowledge, or intellect). I believe this is what has been lost or suppressed from some exoteric mainstream forms of Christianity. Christ IS God, Christ DID perform miracles, He had teachings and sayings as recounted in the Gospels, but there is also a practice required of one’s own consciousness for further spiritual development and liberation from bondage to this world.
Besides the emotional aspect of devotion towards God, love for God and for fellow humanity, there also are cognitive practices of self-observation and self-remembering, looking through one’s consciousness with meditative awareness and detaching oneself from inner thralldom and subservience to “the things of this world.”
In fact, this part is not even very controversial. The Desert Fathers had such practices and teachings, which you can find in books like The Sayings of the Desert Fathers, and it’s also in the Philokalia, an old Eastern Orthodox text that’s a compilation of speeches and teachings from early Orthodox monks, hermits, mystics, saints and theologians. They were closer to original Christianity, I believe.
So, the actual mechanism is fundamentally reordering your mind and soul to be more harmonious and detached, so that it doesn’t get drawn back to the karma-producing/sin-producing things of this world.