User blog comment:Hunterinpurgatory/season 8 theory (angels, tablets,etc.)/@comment-82.34.210.166-20130511055917

If they seal heavven, how does that explain the fact castiel is in season 9. At the end of each season, all he big stuff truly happens. yellow eyed demon, killing him, deal time, apocalypse, archangle battle royale, purgatory, leviathon beheadment, so gates  of hell sealed seem likely. the thing is things in spernatural never go down easy, there are very few happy endings.

Remember the table gave a way to kill leviathons, but it also draged them into purgatory, all the helpful stuff on the tablets demands a price.