Turn over as e-books deteriorate (7)
I believe the answer is:
entrust
'turn over' is the definition.
(entrusting is a kind of turning over)
'e-books deteriorate' is the wordplay.
'books' becomes 'NT' (abbreviation for New Testament).
'deteriorate' becomes 'rust' (I've seen this in another clue).
'e'+'nt'+'rust'='ENTRUST'
'as' is the link.
(Other definitions for entrust that I've seen before include "Put something into another's care" , "Nutters (anag)" , "Charge (with) - put into the care (of)" , "Put into someone's care" , "Give for safekeeping" .)