He's in both the Bible and the thesaurus (4)

I believe the answer is:

esau

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'he's in both the bible' is the definition.
The definition suggests a singular noun which matches the answer. I also know that 'bible' relates to this answer.

'the thesaurus' is the wordplay.
'ESAU' is hidden within the letters.
But, I'm uncertain how this is indicated.

'and' acts as a link.

Can you help me to learn more?

(Other definitions for esau that I've seen before include "First son of Isaac (Bible)" , "Hairy biblical man" , "scriptural character" , "He gave away his biblical birthright for a mess of pottage" , "Cheated brother" .)

I've seen this clue in the Evening Standard.

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