There does seem to be the potential for a game of "history telephone" being played here, but we cannot be certain. Legend states that the gods walked among the spoken races until the first umbral era. There were Allagan Runestones in 1.0 that had the symbols of the gods on them. We infer from this that knowledge and worship of The Twelve dates at least as far back as ancient Allag. We have no commonly known physical objects in game with a connection to the gods that is older than these runestones.

If you're like me, though, you might believe that there is more to the symbols of the gods than just being symbols that represent the gods. They might hold the secrets to magic, arcanima, or something else entirely. Though there is no blatant evidence to suggest this at present, certain truisms in the real world lend credence to these symbols having other meanings before they became associated with The Twelve. Modern Christian holidays, for example, were mapped onto Ancient Pagan ones as Europe of Antiquity was converted to the new faith. Samhain became Halloween, Saturnalia became Christmas, and the list goes on. The closest we can get to a suggestion that our symbols have multiple associations is that the Ixal make use of some of them. We have no obvious answer as to why. Garuda, being fairly capricious, would not tolerate her chosen people worshiping other gods. So the question of a larger implication for these symbols remains unanswered while the slightest hint of greater significance remains.