Missionary has job cutting beer (7)
I believe the answer is:
apostle
'missionary' is the definition.
(thesaurus)
'job cutting beer' is the wordplay.
'job' becomes 'post' (post is a kind of job).
'cutting' is an insertion indicator (some letters cut their way into a word).
'beer' becomes 'ale' (I've seen this before).
'post' put into 'ale' is 'APOSTLE'.
'has' is the link.
(Other definitions for apostle that I've seen before include "eg John, Paul" , "Holy person" , "Evangelist, proponent" , "Leaps to find teacher of faith" , "St James, for example" .)