Like sheep and goats, extremes in some Bible story (9)

I believe the answer is:

separable

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'like sheep and goats extremes' is the definition.
I can't judge whether this defines the answer.

'some bible story' is the wordplay.
'some' becomes 'se' (I am not sure about this - if you are sure you should believe this answer much more).
'bible story' becomes 'parable' (I've seen this before).
'se'+'parable'='SEPARABLE'

'in' acts as a link.

Can you help me to learn more?

(Other definitions for separable that I've seen before include "That may be disjoined" , "not permanently joined together?" .)

I've seen this clue in The Times.

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