Second person appearing in Bible (4)
I believe the answer is:
next
'second' is the definition.
(thesaurus)
'person appearing in bible' is the wordplay.
'person' becomes 'ex' (ex is a kind of person).
'appearing in' is an insertion indicator.
'bible' becomes 'nt' (short for New Testament).
'ex' inserted inside 'nt' is 'NEXT'.
(Other definitions for next that I've seen before include "Closest" , "Proximate" , "Neighbour lives in the house . . . . door" , "Immediately afterwards" , "Coming nearest in time or sequence" .)