Explanation is a little long, but please read. Thank you =).
This will be a symbol for a fictional sci-fi religion in a story. The story takes place in the near future. The story goes that a new religion has emerged that represents the next chapter of Abrahamic faith. This religion has somehow arisen through artificial intelligence. An artificial super intelligent entity in the future has gotten access to Abrahamic religious texts. And it has synthesized the different aspects of Abrahamic holy writings to make a new religion. This synthesis represents the rise of an AI-God.
This AI-God is ominous and it's unclear what it will do. In the story this new AI-God gradually takes over society. Some people see the emergence of this new AI-God as re-organizing society for the better. Crime drops, many unthinkable medical breakthroughs happen and people are moving towards a post-scarcity society. Where as other people see these improvements as a facade and equate the new way of living as being imprisoned in a benevolent invisible nature preserve where humans are domesticated by a higher specie (artificial intelligence).
The religion is a combination of Judaism, Christianity and Islam. The religion is not a synthesis of every holy writing in the world. Therefore influences outside of the Abrahamic faith would be "off plot". Visually speaking, the symbol should be identifiable to people from these three religions, but should not be dominated by any single religion. I'm not sure how to address this. Perhaps there is some way to geometrically integrate the cross (Christianity), 6-side star (Judaism), 5-side star (Islam). But you are not tied to this idea you are welcome to explore other approaches too.
The design cannot use words (most religious symbols don't). It should lean towards being masculine and modern. However modernity must also be balanced with still hinting at religious elements (which are unavoidably old). The symbol should look ominous. For example fundamentalist followers of this new religion in the story begin spray painting graffiti of it over the city to instill fear in non-believers. There are also terrorist acts associated with the religion so it's seen on flags too.
The audience that will most likely read the story are people interested in the "singularity" concept. So likely male and likely sci-fi crowd. You can read more about the concept of singularity on reddit or elsewhere.
The symbol will mostly be used online. It should be ideal shape for using in something like a facebook page profile (square).
To summarize, it should look:
3) Somewhat influenced by Abrahamic faiths (Judaism, Christianity, Islam)
4) Imagine that it is hand drawn on a wall as graffiti. (if you cannot hand draw it then it's unlikely it would spread as a religious symbol). The actual file delivered should still be precise geometric shapes, but I'm saying that it should be something which in theory can be used for graffiti because it's simple enough.
5) Along with 4) Also imagine it being on a flag. Perhaps a good way to visualize the logo is putting it on a black flag. Does it look menacing to you? Would you fear it? If not, then perhaps it's not ominous enough.