Quietly tell a churchman (7)
I believe the answer is:
prelate
'a churchman' is the definition.
(I know that prelate is a type of Christian minister)
'quietly tell' is the wordplay.
'quietly' becomes 'p' (musical symbol).
'tell' becomes 'relate' (as in to tell or relate a story).
'p'+'relate'='PRELATE'
(Other definitions for prelate that I've seen before include "Church high-ranker" , "High-ranking clergyman" , "Pleater (anag.)" , "Senior member of the clergy" , "priest" .)