Clever Biblical victim they say (4)
I believe the answer is:
able
'clever' is the definition.
(able can mean skilled or talented)
'biblical victim they say' is the wordplay.
'biblical victim' becomes 'abel' (I've seen this in another clue).
'they say' shows a homophone (sound like).
'abel' is a homophone of 'ABLE'.
(Other definitions for able that I've seen before include "Capable or proficient" , "In a position or competent to" , "Competent as, say, sailor" , "Fully competent" , "Clever skilful" .)