Self-righteous Biblical person (8)
I believe the answer is:
pharisee
'self-righteous biblical person' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for pharisee that I've seen before include "Member of ancient Jewish sect; Heap, sire (anag.)" , "(Gospel) hypocrite" , "A Biblical hypocrite" , "Strict observer" , "hypocritical type" .)