Beloved's likely to be seen within group of angels (7)
I believe the answer is:
chapter
'group of angels' is the definition.
The answer and definition can be both groups as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'beloved's likely to be seen within' is the wordplay.
'beloved's' becomes 'cher' (I can't justify this - if you can you should give a lot more credence to this answer).
'likely' becomes 'apt' (similar in meaning).
'to be seen within' means one lot of letters goes inside another.
'cher' going around 'apt' is 'CHAPTER'.
Can you help me to learn more?
(Other definitions for chapter that I've seen before include "Division of novel - church body" , "Sequence - section of book - church body" , "Distinctive period of history" , "Part of book" , "series of events" .)