The church introducing order to the teaching of scripture (4)
I believe the answer is:
rome
'the church' is the definition.
(I've seen this before)
'introducing order to the teaching of scripture' is the wordplay.
'introducing' means one lot of letters goes inside another (some letters introduced or inserted into others).
'order' becomes 'om' (order of merit).
'to the teaching of scripture' becomes 're' (I am not sure about this - if you are sure you should believe this answer much more).
'om' placed within 're' is 'ROME'.
Can you help me to learn more?
(Other definitions for rome that I've seen before include "Italian capital (where one Ac died)" , "Where to emulate the locals" , "Seat of Italian empire" , "European capital" , "The Eternal City" .)