Referring to belief in Lord, act differently (9)

I believe the answer is:

doctrinal

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'referring to belief' is the definition.
I can't tell whether this defines the answer.

'in lord act differently' is the wordplay.
'differently' is an anagram indicator.
'in'+'lord'+'act'='inlordact'
'inlordact' with letters rearranged gives 'DOCTRINAL'.

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(Another definition for doctrinal that I've seen is " Relating to beliefs".)

I've seen this clue in The Independent.

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