Mercury

After entering Nirvana, Mercury is the second location, which is where all of the normal Angels reside. The live here peacefully, in as much of a Paradise as the Higher Souls do in Paradise, and only leave when higher beings summon them for a mission or something. According to human religious text, they're only purpose is to send messages of the Gods to humans; in reality, however, even though that is a job they have, they also serve as a defensive army, should the rarity come when the Holy Guard fails.