Carol uplifted by one's spiritual awareness? (6)
I believe the answer is:
gnosis
'spiritual awareness?' is the definition.
(term for knowledge of spiritual mysteries)
'carol uplifted by one's' is the wordplay.
'carol' becomes 'song'.
'uplifted' says the letters should be written in reverse.
'by' says to put letters next to each other.
'one's' becomes 'is' (Roman numeral).
'song' in reverse letter order is 'gnos'.
'gnos'+'is'='GNOSIS'
(Other definitions for gnosis that I've seen before include "State of extreme filth" , "Knowledge of spiritual mysteries" , "Awareness of spiritual mysteries" .)