Performs part of New Testament (4)
I believe the answer is:
acts
I believe this is a double definition.
'performs' is the first definition.
(acting is a kind of performing)
'part of new testament' is the second definition.
('Acts' is part of 'new testament')
(Other definitions for acts that I've seen before include "Takes steps" , "Pieces of legislation" , "Done deeds" , "spiritual work" , "functions" .)