Page cut from agreements in book before Romans (4)
I believe the answer is:
acts
'book before romans' is the definition.
(I've seen this in another clue)
'page cut from agreements' is the wordplay.
'page' becomes 'p'.
'cut from' is a deletion indicator.
'agreements' becomes 'pacts' (pact is a kind of agreement).
'pacts' with 'p' removed is 'ACTS'.
'in' acts as a link.
(Other definitions for acts that I've seen before include "Decrees" , "Fifth NT book" , "Deeds; NT book" , "Behaves like thespian" , "Major divisions of play" .)