User blog comment:ImperiexSeed/Supernatural Mysteries/@comment-1509826-20120926212754/@comment-3481504-20121003211051

General: Uh, I heavily suggest that you re-watch the episode again. I myself do not recall him saying that. In a conversation with God, we learn from Castiel that he dates back to Cain adn Abel, but that isn't millions of years ago - far from it, actually. Zachariah's undoubtedly been working for the Host way longer than Cas has. Don't just take his words for it. He's a master teleporter and he easily bended time.