Bemoan unconvincing religious books (6)

I believe the answer is:

lament

'bemoan' is the definition.
(I know that bemoan can be written as lament)

'unconvincing religious books' is the wordplay.
'unconvincing' becomes 'lame' (I've seen this in other clues).
'religious books' becomes 'NT' (New Testament).
'lame'+'nt'='LAMENT'

(Other definitions for lament that I've seen before include "Complain" , "Express disappointment" , "Mental (anag)" , "Express sorrow" , "Mourn, grieve for" .)

I've seen this clue in The Times.

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