Two fathers requiring a temple (6)
I believe the answer is:
pagoda
'temple' is the definition.
(pagoda is a kind of temple)
'two fathers requiring a' is the wordplay.
'two fathers' means two replacements for 'father'.
'father' becomes 'pa' (pa can mean dad or father).
'father' becomes 'God' (Christian address).
'requiring' is a charade indicator (letters next to each other).
'pa'+'god'+'a'='PAGODA'
(Other definitions for pagoda that I've seen before include "Eastern tiered tower" , "Pyramidal Asian temple" , "shrine" , "Many-tiered building" , "Oriental temple, often a tower" .)