Theory about Sophia in Eorzea

[Ametrine]

I may be misunderstanding, but doesn't that technically give credence to the idea that Sophia's and Sephirot's symbolism was an influence to Belah'diah?

Thus, also explaining the symbolism appearing all over Ul'dah? (and possibly Sil'dih?)

[Alberel]

I may be misunderstanding, but doesn't that technically give credence to the idea that Sophia's and Sephirot's symbolism was an influence to Belah'diah?

Thus, also explaining the symbolism appearing all over Ul'dah? (and possibly Sil'dih?)

I agree, Koji's explanation for the proliferation of Azeyma's sun symbol actually fits in perfectly with the OP's theory. The Allagan conquest of Meracydia and then its subsequent downfall essentially assimilated and then scattered Meracydian culture across Eorzea. It's very possible that included more than just the sun symbol, and perhaps elements of the various belief systems themselves.