A slight tangent to your slight tangent: Monastic regimens look an awful lot like proof-of-work... Is the next step in facilitating the human-machine meta-minds minting AI crypto-religions?
Also, taking into account the earlier thread on Sci-Fi vs Sci-Fantasy, with a comment mentioning that science fiction tends to be current social commentary in the guise of the future: self-aware (and self-minting) currency a la Accelerando is an interesting analogy for religious, spiritual, cultural, and economic movements.
That is a later development. In the first millennium AD there were active attempts to export Judaism, the most famous result of which was the conversion of the Khazar kingdom to Judaism. And the very etymology of the word “proselytising” refers to Judaism making some inroads among other inhabitants of the Mediterranean.