@Luce said
"TL;DR: If I join the A.'.A.'., I am not allowed to alter the god names of any of the rituals. I believe this goes against the non-sectarian and anti-dogmatic ethos of the organization. Why am I not allowed to make minor alterations under the guidance of my superior and in response to the leading of my HGA?"
Hmm. OK, think of it this way. All the various Orders are their own specific thing, all the various systems of attainment are their own thing, with their own traditions. But none of them (if they are genuine) will dictate to you how to approach the most fundamental questions. All they will do is give you a toolset.
The A.'.A.'. is a specific system of attainment and its rituals and practices are already a non-sectarian distillation of practices from many other systems, including Christianity (I don't know if you've noticed, but A.'.A.'. symbolism is rich with Christian symbols and concepts, as well as Egyptian, Hindu and Buddhist.)
And while there are lots of fairly strict rules and a strict system or progression for bread-and-butter stuff that prepares you for the main "goals" (K&C, Crossing of the Abyss), it's never dictated to you how you should try and attain those crucial "goals". That's between you and your God.
So how does that link up with something like Christianity? The fault of the old religions, from the Thelemic point of view, is that while they do give you tools, they also do something more than just that: **they also tell you how to go on and use them, what to expect, and what to call your result. **
This is the thing of dogmatism that Thelema (partly) came to destroy. For example, for Catholicism and Protestantism both, Christ is, dogmatically, something external to poor little me, the worshipper. It was quite a tricky job for mystics in the Christian tradition to avoid even hinting that "Christ" was anything other than the one-shot-historically-incarnated Son of God, who is wholly external to the worshipper, or for mystics in the Islamic tradition to depart too far from God as being the wholly external entity who instructed Mohammed in a one-shot, final set of instructions for mankind, through the Angel Gabriel. But is God only something external, or also something internal? In fact, Christian tradition itself hints that He is something internal too (not just something that talks to you internally, but something that is in some sense also intimately you). But that messes with the "authority" of the lineage. The message can't be gotten rid of entirely, but it has to be downplayed, and mystics always had to toe the downplaying line (if they didn't, they got into trouble, like Miguel Molinos or, in the Islamic case, Mansur al Hallaj).
All this is on a razor's edge actually. In one sense God is very much an external thing worthy of worship (or at the very least, it sometimes pays to view Him that way). But in another sense, God is something very definitely within the worshipper, and (in a sense) more intimately the worshipper than the thing the worshipper ordinarily feels him or herself to be. Crowley put it in a nutshell when he wrote (in MiTaP):-
"By God I here mean the Ideal Identity of a mans inmost nature. "Something ourselves (I erase Arnolds imbecile and guilty not) that makes for righteousness". "
(The reference is to Matthew Arnold, a poet and literary figure of Victorian times, who had said God is "a tendency not ourselves that makes for righteousness".)
At some point you have to make a choice: you have to accept or reject the principle that Christ is in you. If you accept it, then it's all fine, Christ can also be external to you and worshipped. But so can any other God. In that case, the situation is that you acknowledge that all religions are "about the same thing", but you just wave in a friendly fashion to the other ones that don't float your boat: "that's nice, but I'll stick to my own preferred iconography, thanks".
However, if you reject that principle, and stick with the (from a Thelemic point of view) corrupt dogma of Christianity (as a human tradition), that God is outside you only, and that this version of "God" is the only right one, then you've got a fundamental contradiction with Thelema, and you can't really carry on both at the same time.
The clue is to notice that in either case, it's your decision.
It's all about "energized enthusiasm". If the symbolism of Christ gets you going, gets you excited and enthused about life, then that's the thing for you and nobody can take it away from you - so long as you bear in mind that the Christ you're looking for is also in you. Remember that God is omnipresent, you are not a black hole where no divinity is, on the contrary, the divine in you is your closest access to the divine. All priests, churches, Popes, gurus, teachers, gods, even God, are (or should be) merely external representations, adjuncts, helps.
Btw, what I've been saying about Christianity applies to all the religions from a Thelemic point of view - they are all corrupt, or all ok and perfectly workable, depending on whether they diminish your (the seeker's) fundamental divinity or not. Because most of the Asian religions start off accepting this almost as a primary principle - e.g. "You are THAT" - they are off to a better start - the problem with them is that, just as Abrahamic religions have often done, they "keep the people down", e.g., their form of corruption is more practical, in that they uphold caste systems, allow "monks" and the like to vampirize their people, and in practice often also maintain the fiction that God, or the Buddha, is something external, way over there ...
In fact, the Thelemic "message" is nothing new, all that's new is that it's out in the open, democratized, so to speak, whereas before it was esoteric (mainly because some of the smart people who understood it, but were in positions of power and worldly authority, thought it would cause chaos in society if it were widely known and understood). IOW, all that's new is that we now have a religion that proclaims the "secret" of everyone's divinity openly as everyone's birthright, something anyone can access and live from the truth of, something everyone can, actually, "handle", and that contrary to such a truth being widespread being likely to cause chaos, it will actually result in a more ordered, more benign society.
Just some food for thought, FWIW.