Religious address (6)
I believe the answer is:
sermon
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">religious address</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for sermon that I've seen before include "Moral lecture" , "Talk delivered during industrial dispute" , "Lecture in church" , "Address of a religious nature" , "Moralising address from pulpit" .)