Secure setting for the Nativity (6)
I believe the answer is:
stable
I believe this clue is a double definition.
'secure' is the first definition.
(I've seen this before)
'setting for the nativity' is the second definition.
(I've seen this before)
(Other definitions for stable that I've seen before include "Well balanced" , "Firm and dependable" , "Outhouse for horses" , "Firmly balanced or fixed" , "Constant - place for horses" .)