Monk and a couple of bishops with holy books (5)

I believe the answer is:

abbot

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'monk' is the definition.
(an abbot is a senior monk)

'a couple of bishops with holy books' is the wordplay.
'couple of' indicates the doubling of some letters.
'bishops' becomes 'b' (this could be a standard abbreviation I've not previously seen).
'with' says to put letters next to each other.
'holy books' becomes 'OT' (Old Testament).
'b' doubled is 'bb'.
'a'+'bb'+'ot'='ABBOT'

'and' is the link.

Can you help me to learn more?

(Other definitions for abbot that I've seen before include "Head of religious house" , "Father" , "Supervisor of brothers" , "Monks' superior" , "Convent leader, male" .)

I've seen this clue in The Guardian and The Times.

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