Humble churchman takes me in (6)
I believe the answer is:
demean
'humble' is the definition.
(demeaning is a kind of humbling)
'churchman takes me in' is the wordplay.
'churchman takes' becomes 'dean' (I can't explain this - if you can you should believe this answer much more).
'in' indicates putting letters inside.
'dean' enclosing 'me' is 'DEMEAN'.
Can you help me to learn more?
(Other definitions for demean that I've seen before include "Stoop" , "Lower in reputation, humiliate" , "disgrace" , "Degrade, abase" , "Cause (someone) to suffer loss of dignity" .)