Place where one might learn about religion's income (7)
I believe the answer is:
revenue
'income' is the definition.
(revenue is a kind of income)
'place where one might learn about religion's' is the wordplay.
I cannot really understand how this works, but
'place' could be 'venue' (I've seen this in another clue) and 'venue' is found in the answer.
'about' could be 're' ('re' means regarding or about) and 're' is found in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for revenue that I've seen before include "Government's income" , "Gross business income" , "Return" , "Tax for the government" , "Ready" .)