It's a whole religion and philosophy called Gnosticism that has its own rabbit hole. It's the religion of the elites. If you feel like learning more, this video makes for an excellent introduction https://youtu.be/X57EnniEE-k
Discussion
Gnosticism is not the religion of the elites...
God, you Catholics will just make up a strawman and then claim that's what X is so that you never have to actually interact with people who actually are X and can participate in your historically violent circlejerks about things you do not even put in any effort to know about.
Disgusting.
What "the secret knowledge" is is not secret. There is nothing to "lord over." It's readily apparent and spoken about all the time, but you for some reason are completely unable to interface with it.
Gnosis is about HOW TO DIE so that you do not reincarnate. Dumbass.