Reverse the style for Old Testament location (4)

I believe the answer is:

edom

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'old testament location' is the definition.
The definition suggests a singular noun which matches the answer.

'reverse the style' is the wordplay.
'reverse' says the letters should be written in reverse.
'the style' becomes 'mode' ('mode' can be a synonym of 'style').
'mode' written backwards gives 'EDOM'.

'for' acts as a link.

Can you help me to learn more?

(Other definitions for edom that I've seen before include "Backward manner of existence" , "Biblical kingdom" , "In the Bible, the land of the people of Esau" , "Biblical people" , "Kingdom of the Middle East" .)

I've seen this clue in The Irish News.

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