Guess appropriate power coming from on high (6,5)

I believe the answer is:

divine right

'power coming from on high' is the definition.
(power or authority derived from God)

'guess appropriate' is the wordplay.
'guess' becomes 'divine' (divining is a kind of guessing).
'appropriate' becomes 'right' (similar in meaning).
'divine'+'right'='DIVINE RIGHT'

(Other definitions for divine right that I've seen before include "political doctrine" , "God-given authority" .)

I've seen this clue in The Times.

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