They assist the clergy (8)
I believe the answer is:
acolytes
'they assist the clergy' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for acolytes that I've seen before include "They assist priests in services" , "They assist priests or ministers in liturgical service" , "They assist the clergy in liturgical services" , "Cosy tale (anag) - followers" , "Assistants or attendants" .)