Spoke enthusiastically, as one with radical views about Bible (5)
I believe the answer is:
raved
'spoke enthusiastically' is the definition.
(to rave is to talk about something with enthusiasm)
'as one with radical views about bible' is the wordplay.
'as one with radical views' becomes 'red' (red can mean left-wing).
'about' means one lot of letters goes inside another.
'bible' becomes 'av' (Authorised Version of the Bible).
'red' placed around 'av' is 'RAVED'.
(Other definitions for raved that I've seen before include "Attended a music event" , "Talked wildly" , "Talked incoherently" , "spoke with great enthusiasm" , "Praised enthusiastically" .)