Quietly mentioning worshipping (8)
I believe the answer is:
praising
'worshipping' is the definition.
'quietly mentioning' is the wordplay.
'quietly' becomes 'p' (p for piano and quiet).
'mentioning' becomes 'raising' (raising is a kind of mentioning).
'p'+'raising'='PRAISING'
(Other definitions for praising that I've seen before include "Extolling" , "Lauding" , "Expressing approval or admiration" , "Approving" .)