Homily (6)
I believe the answer is:
sermon
'homily' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sermon that I've seen before include "Reproving speech (delivered on the Mount?)" , "Religious exhortation" , "Speech in church" , "Moral lesson in church" , "Address of a religious nature" .)