Wickedness embodied in Vatican elder upon conversion (5,9)

I believe the answer is:

devil incarnate

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'wickedness' is the definition.
I know nothing about this answer so I can't tell whether this works.

'in vatican elder upon conversion' is the wordplay.
'upon' is a charade indicator (letters next to each other).
'conversion' is an anagram indicator.
'vatican'+'elder'='vaticanelder'
'in' put after 'vaticanelder' is 'vaticanelderin'.
'vaticanelderin' is an anagram of 'DEVIL INCARNATE'.

'embodied' is the link.

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

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