Novel I pen as she produces religious book (9)
I believe the answer is:
ephesians
'religious book' is the definition.
(book of the Bible)
'novel i pen as she' is the wordplay.
'novel' indicates anagramming the letters (letters in a new or novel order).
'i'+'pen'+'as'+'she'='ipenasshe'
'ipenasshe' with letters rearranged gives 'EPHESIANS'.
'produces' is the link.
(Other definitions for ephesians that I've seen before include "Biblical epistle of Paul" , "New Testament book" , "good book" .)