User blog comment:Twilight Despair 5/Oldest Enemy or Species./@comment-4011543-20120517090257

All the angels have certain duties:

Michael was the Vicecory of Heaven, its Captain, if you will

Lucifer was Heaven's Illuminator

Gabriel was the messenger

Raphael was like Heaven's doctor

Zachariah was the chief of the Garrison

Castiel was the Angel of Thursday

Joshua was the Gardener

Metatron was the Scribe of Heaven - thus, according to one tradition, only him and God were allowed to sit in Heaven