User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-7153535-20130628164327/@comment-3337043-20130629030137

I was always skeptic about the PJO great prophecy also, but there is some logic to it. I guess, in a sense, "gods" is very specific, it's not Titans or Protogenoi, it's gods. And "gods" could be taken as only masculine, so when saying the "eldest" (masculine) gods, it's referring to Zeus, Poseidon, and Hades.