User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-3481504-20120608025050/@comment-5124253-20120609090817

archangels can probably hide and they could bind death to their will. anyway it probably only takes a few seconds to roast the planet. it wouldn't be worth the risk. and castiels quote is "there's a reason why my father locked them in purgatory, They're the piranha that would eat the whole aquarium." the whole aquarium likely meaning everything in creation. death states the whole petri dish aswell which also suggests this.