A short time with saint and prophet (4)
I believe the answer is:
amos
'prophet' is the definition.
(biblical prophet)
'a short time with saint' is the wordplay.
'short time' becomes 'mo' (as in 'just a mo').
'with' is a charade indicator (letters next to each other).
'saint' becomes 's'.
'a'+'mo'+'s'='AMOS'
'and' is the link.
(Other definitions for amos that I've seen before include "Part of bible" , "Old Testament book" , "Old Testament prophet" , "Prophet in the Bible" , "Hebrew prophet" .)