Monstrous ogre welcoming stint as preacher (9)
I believe the answer is:
gospeller
'preacher' is the definition.
(gospeller is a kind of preacher)
'monstrous ogre welcoming stint' is the wordplay.
'monstrous' is an anagram indicator.
'welcoming' indicates putting letters inside (in sense of 'inviting in').
'stint' becomes 'spell' (I am not sure about this - if you are sure you should believe this answer much more).
'ogre' with letters rearranged gives 'goer'.
'goer' enclosing 'spell' is 'GOSPELLER'.
'as' acts as a link.
Can you help me to learn more?
(Other definitions for gospeller that I've seen before include "evangelical preacher" , "Bible reader" , "zealous preacher" , "Evangelist" , "religious type" .)