User blog comment:DragonWarrior627/Making Sense of the Darkness/@comment-79.115.74.88-20151116210122/@comment-79.115.74.88-20151117173234

You are right about the season 10 writing, season 10 was the worst season of Supernatural in my opinion. The biggest mistake was killing Death. In season 6 he said that he last forever, and now he was killed. And it did not make sense to give the only weapon in universe that could kill you to handle to Dean to kill Sam, Sam can be killed with a gun , he is human. I was sure at that scene that Dean will use it on Death, but i didn t belive it will work

Every one has his own opinion, but is not a fact who is older , archangels ore leviathans .In season 7 Death mention that leviathans are older than angels , and in season 10 he said that God make the archangels to fight the Darkness , from that i understant that first was archangels, then leviathans and after that regular angels.