That’s one of the forces Judeo-Christianity is up against.
They all have in common that man can be perfected. They may each define that idea a bit different.
JW’s and Mormons believe that you can work for your salvation.
Church of Scientology believes that the mideochlorians can save save you. (Sarc)
The left believes that man must strive to not leave a mark on earth in order to be saved.
I’m not saying that they are perfectly Gnostic, but they share that one aspect Gnosticism, the imperfection of mankind, working towards salvation and leaving the flesh behind.
But I'll betcha that BOTH will deny this!