Comfort priest in embrace of arbitrator (6)
I believe the answer is:
relief
'comfort' is the definition.
(I know that relief is a type of comfort)
'priest in embrace of arbitrator' is the wordplay.
'priest' becomes 'eli' (biblical figure).
'in embrace of' means one lot of letters goes inside another.
'arbitrator' becomes 'ref' (I've seen this in another clue).
'eli' put within 'ref' is 'RELIEF'.
(Other definitions for relief that I've seen before include "Burden lifted" , "Deliverance; assistance (to poor)" , "Easement from pain or stress" , "Alleviation or support" , "A lightening of pressure" .)