Conservatives support naked foray into religious societies (9)

'religious societies' is the definition.
Although both the answer and definition are plural nouns, I don't understand how they can define each other.

'conservatives support naked foray' is the wordplay.
'conservatives' becomes 'tories' (Tory is an example).
'support' means one lot of letters go next to another (in a down clue, some letters hold others up).
'naked' says to take the centre.
The centre of 'foray' is 'ora'.
'tories' put after 'ora' is 'ORATORIES'.

'into' is the link.

Can you help me to learn more?