One who will say prayers in correct order (6)
I believe the answer is:
rector
'one who will say prayers' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'in correct order' is the wordplay.
'in' says the answer is hidden in the clue.
'RECTOR' can be found hidden inside 'correct order'.
Can you help me to learn more?
(Other definitions for rector that I've seen before include "Parish clergyman" , "Head of some colleges" , "Churchman" , "Type of clergyman" , "Preacher Man" .)