Being just what a clergyman needs? (6)

I believe the answer is:

living

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'being just' is the definition.
'living' can be an answer for 'being' ('live' can be a synonym of 'be'). I am not certain of the 'just' bit.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for living that I've seen before include "Existing" , "19 of London, or 25 of Africa?" , "parish" , "Around" , "Quick; benefice" .)

I've seen this clue in the Evening Standard.

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