Spiritual glow (4)
I believe the answer is:
aura
'spiritual glow' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aura that I've seen before include "Emanation - distinctive air" , "distinctive impression" , "subtle emanation" , "Indiscernible quality" , "Intangible quality surrounding a person or thing" .)