Displace universal expert on Holy Writ (6)
I believe the answer is:
uproot
'displace' is the definition.
(uprooting is a kind of displacing)
'universal expert on holy writ' is the wordplay.
'universal' becomes 'u'.
'expert' becomes 'pro' (short for professional).
'on holy writ' becomes 'ot' (I can't explain this - if you can you should believe this answer much more).
'u'+'pro'+'ot'='UPROOT'
Can you help me to learn more?
(Other definitions for uproot that I've seen before include "Tear from ground or force to leave home" , "Move forcibly" , "Extirpate" , "Pull (plant) from ground" , "Remove from the ground" .)