Violently separated congregation when Reverend spoke, as predicted (8)
I believe the answer is:
foretold
'predicted' is the definition.
(synonyms)
'violently separated' is the wordplay.
'violently' becomes 'fore' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'separated' becomes 'told' ('tell' can be a synonym of 'separate').
'fore'+'told'='FORETOLD'
'congregation when reverend spoke as' is the link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Another definition for foretold that I've seen is " Predicted".)