Stay for the end of worship (4)
I believe the answer is:
prop
'stay' is the definition.
(I've seen this before)
'for the end of worship' is the wordplay.
'for' becomes 'pro' (I've seen this before).
'the end of' says to take the final letters.
The last letter of 'worship' is 'p'.
'pro'+'p'='PROP'
(Other definitions for prop that I've seen before include "What actor may carry" , "A rigid support - 37 Across is one" , "player involved in scrum" , "Stay" , "Person or thing providing support" .)