I'm not entirely sure what prompted this, but I'm trying once again to slog through ST:DS9 (I've never finished it, possibly because it seems so un-trek to me.)
From the pilot episode Kai Opaka tells Sisko that he will become the emissary. Then only a few episodes later and already there are characters calling him "the emissary" but I don't remember him ever actually 'becoming' the emissary. Sure, he went through the wormhole and spoke with the aliens / prophets there, but even then the title was not officially bestowed upon him. Also, I read the Memory Alpha article regarding Sisko, as well as the wiki and a few other pages, and all of them just point to this even as him becoming the Emissary.
When was this title officially bestowed? How was this title bestowed?
Also note that I don't care about 'spoilers' or what not. I merely want some clarity.