I finally get Setianism. It took me such a long time because I thought the Egyptology, the Orders, and the Crowleyan and LaVeyan affectations mattered. None of that matters.
Setianism in a nutshell:
"Behold! I AM! Thus awake, I observe myself, assess myself, adamantly adjust and accelerate myself, and by virtue of my self-absorption, I shall - if anyone ever has or will - I shall escape annihilation. EGO INVICTUS!"
All the rest the Temple talks about is cud to be chewed by cows.
FYI, the last two words of the above assertion mean, in Latin, "I undefeated."