Clobber, biblically (5)
I believe the answer is:
smite
'clobber biblically' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for smite that I've seen before include "Strike heavily" , "Hit hard in olden times" , "Whack" , "Beat" , "Strike in archaic way at times" .)