Be devout, please (4)
I believe the answer is:
pray
I believe this clue is a double definition.
'be devout' is the first definition.
(I've seen this in another clue)
'please' is the second definition.
(I've seen this before)
(Other definitions for pray that I've seen before include "Supplicate, petition" , "Offer supplication" , "make supplications" , "Supplicate, entreat" , "Please" .)