Devout or saintly (5)
I believe the answer is:
pious
This clue is a double definition.
'devout' is the first definition.
(devoutly religious)
'saintly' is the second definition.
(I've seen this in another clue)
(Other definitions for pious that I've seen before include "Godly" , "Devout" , "Dutiful" , "Saintly" , "Sanctimonious" .)