Openers learned very quickly that the Between was useful, but not safe. And He set up the Symbol...maybe five years after Jerusalem. Like a lot of events of the time, it just kind of happened, and most of the world didn't see it until it was already there. But it was there, if people had been looking.
The Symbol is...well, it looks kind of like a spiral, or a loop, or a series of loops. I don't know. It's hard to describe. People define it in terms of symbols from their own culture. What letter it looks like, what alchemical symbols. Runes, Egyptian hieroglyphics, symbols from the Mayan calendar (even though we're well past that expiration date). But I think it's just something He made up. What frustrates people about the Symbol is that you can't cheat with it.
They know the intent behind the Symbol. That's the only way to explain it. If you're just using it to try and sneak through the Between and hook up with other resistance-types, They'll kill you. If you're using the Symbol to get through the Between to deliver a letter or something, They let you by. If you're delivering a letter and hooking up with resistance...well, then you're trusting your luck a little. They might kill you. They might not. And if there's a way to make this reliable, to really use the Symbol to your benefit, I don't know the secret.
It all points to Them communicating in ways other than what we use. Letters are symbols, of course, and depending on the nature of the symbol system a letter can stand for a concept or a sound. In English, letters stand for sounds and we group them together into words. In other systems, they stand for concepts, and as concepts are grouped you get bigger and more complicated concepts. But I think They understand symbols on a deeper, or more complex level - They know, somehow, what the intent was when the Symbol was made. I have no idea how that might work.
But if you watch the footage from Cheyenne Mountain, you can see Him nodding, almost imperceptibly, to the shadows around him. Acknowledgment of Their presence? Subtle, silent commands?
Like I said, that's His real power. Communicating with Them. We always assume He's controlling Them, but what if He is just the one person out of billions that They can understand?
curse the darkness