I can almost guarantee you it is. The Wikipedia page is not as fleshed as it's supposed to be, but I was raised on the fear of Yagog & Magog and we're told the only thing stopping them from coming out and massacring us all, is the great wall of China (well, not exactly, the myth was developed under a flat-world, so they're "at the edge" of Earth. Nowadays the apologists just say it's the GWoC to keep intellectual consistency, but we all know it's not. By their description, they sound like "unlearned savages" outside the Caliphate, Siberia, South East Asia, and Scandinavia; since the rest of the old world was by then very well explored.)
I am not saying you are wrong. I am only saying that I have no idea if the writers of the TV series had any knowledge of such myths and drew upon them -- even unintentionally -- or if someone sat down and played around with sounds until they found something "alien" sounding. I had never heard of what you are talking about until you brought it up and I am fairly well read and have had middle-eastern friends. If I had any awareness of such myths prior to making my earlier post, I am sure I would have made some effort to clearly indicate it was a sci-fi reference in order to avoid confusion. As far as I knew, there was only way to interpret the word "magog".
I imagine quite a lot of Americans have no knowledge of these mythologies, which would be good reason to borrow from them as inspiration for sci-fi: It's adequately foreign and unknown that it is "alien" to the general public here and there is rich material to draw upon if you get stuck, material that is sufficiently unknown that most people won't realize you drew on anything and will think you are just really, really creative. I have heard that Japanese fiction often draws on Christian mythology in a similar manner, which makes for some misunderstanding if it later gets translated to English and marketed to the "western" world.
Yes, I realize that. Presumably there is some disconnect: I said Christian mythology gets used in Japanese fiction, which causes problems when it comes back here where the bible is widely read. Not because Americans don't read the bible but because they do. If non-Christians in a foreign land, speaking a foreign language borrow on Christian imagery for "fluffy" fictional pieces, and it comes back to a culture where Christianity is widespread, it tends to not go over well. I assume the same is true in any comparable situation.
I think we're just having an academic discussion and citing "prior" sources for the sake of disclosure and intellectual honesty. Hopefully no one is offended by the discovery that their idea of 1st rate sci-fi is rehashed religion, or that their one-true-faith is just pagan lore ;-)
I'm not religious. I'm more familiar with Christian imagery/themes/whatever-you-want-to-call-it in part because I grew up in "The Bible Belt". But it doesn't have the same meaning for me as it would for someone who is actually Christian. I just don't understand why the downvote or the above reply to me informing me the bible is widely read in the US. Total mental disconnect for me. Still scratching my head.