Scholar delivering sermon, endless gossip (5)
I believe the answer is:
rabbi
'scholar' is the definition.
(I've seen this before)
'endless gossip' is the wordplay.
'endless' means to remove the last letter.
'gossip' becomes 'rabbit' (rabbit can mean to gossip or chat).
'rabbit' with its final letter taken away is 'RABBI'.
'delivering sermon' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for rabbi that I've seen before include "Religious leader in a Jewish community" , "Hebrew teacher" , "Legal expert" , "Religious leader of Jewish congregation" , "Minister of a synagogue" .)