In a pious way, I’m reformed by its moralising (6)
I believe the answer is:
homily
'its moralising' is the definition.
I can't judge whether this definition defines the answer.
'in a pious way i'm reformed' is the wordplay.
'in' indicates putting letters inside.
'a pious way' becomes 'holy' (I can't explain this - if you can you should give a lot more credence to this answer).
'reformed' is an anagram indicator.
'im' is an anagram of 'mi'.
'holy' placed around 'mi' is 'HOMILY'.
'by' acts as a link.
Can you help me to learn more?
(Other definitions for homily that I've seen before include "Lecture on a moral topic" , "Sermon on a religious topic" , "Address" , "Edifying discourse" , "Moralising lecture" .)