I wonder if âkeeper of the Houses of the Deadâ (
Silmarillion, â
Valaquentaâ) was the original task of NĂĄmo
Mandos or if that task became assigned to him (or better, âdevolvedâ upon him) because of his primary function.
He is also described as âthe Doomsman of the
Valar; ⊠pronounc[ing] his dooms and his Judgments only at the bidding of
ManwĂ«.â (
ibid.) Mythologically, that implies some link between NĂĄmo and ManwĂ«, who is described as âdearest to
IlĂșvatar and understand[ing] most clearly [IlĂșvatarâs] purposes.â The
Vala VairĂ« is NĂĄmoâs âspouse,â who âweaves all things that have ever been in Time into her storied webs
[i.e., tapestries].â NĂĄmo (âMandosâ is actually the name of the â
hallsâ or place of his dwelling; they grow with time as more and more
spirits are consigned to them, but âValaquentaâ says they grow âever widen as the
ages pass [and] are clothed withâ the âwebsâ (tapestries) of VairĂ«) would therefore seem to have some deeper understanding and recollection of the
Music of the Ainur and how it relates to the unfolding of Time, and
Nåmo and Vairë together keep track of that unfolding.
It could be argued that the âhallsâ of Mandos are not so much a physical location as a spiritual one, so that there is
no escape from them even for a powerful Vala such as
Melkor Morgoth.