Biblical attire (4)
I believe the answer is:
robe
'biblical attire' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for robe that I've seen before include "habit" , "Gown or dress of office" , "Loose garment for Boer" , "Clerical garment" , "Christening garment" .)