All for a deity (3)

I believe the answer is:

pan

I'm a little stuck... Click here to teach me more about this clue!

'deity' is the definition.
(Pan is an example)

'all for a' is the wordplay.
'all for' becomes 'p' (I can't justify this - if you can you should believe this answer much more).
'a' becomes 'an'.
'p'+'an'='PAN'

Can you help me to learn more?

(Other definitions for pan that I've seen before include "Toilet bowl" , "Cooking vessel; forest god" , "Greek nature god" , "Cooking utensil and Greek god" , "Slate - cooking vessel" .)

I've seen this clue in the Evening Standard.

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