Performs part of bible (4)
I believe the answer is:
acts
This clue is a double definition.
'performs' is the first definition.
(acting is a kind of performing)
'part of bible' is the second definition.
('Acts' is part of 'bible')
(Other definitions for acts that I've seen before include "Does something" , "Takes steps" , "book form" , "Behaves or plays" , "Follower of John" .)