A clergyman and all his works? (5)
I believe the answer is:
canon
'a clergyman' is the definition.
(canon is a kind of clergyman)
I can't explain the rest of the clue.
(Other definitions for canon that I've seen before include "Collection of writing" , "Body of established rules or principles" , "General principle or senior priest" , "Member of a cathedral chapter" , "General principle or kind of clergyman" .)