User blog comment:Hunterinpurgatory/season 8 theory (angels, tablets,etc.)/@comment-3045936-20130128190615/@comment-3045936-20130128190919

Also, maybe sealing the gates of Heaven keeps souls from going there as well. Yes, reapers are the normally sender of souls to Heaven, Hell, and maybe Purgatory. But, who is to say that while they may not need, it's equally possible they do need the gates to those worlds open. In the sense that they can travel there.