High point getting married in a church (4)
I believe the answer is:
acme
'high point' is the definition.
(I've seen this in another clue)
'married in a church' is the wordplay.
'married' becomes 'm'.
'in' indicates putting letters inside.
'church' becomes 'CE' (abbreviation for Church of England).
'a'+'ce'='ace'
'm' put inside 'ace' is 'ACME'.
'getting' is the link.
(Other definitions for acme that I've seen before include "Height of achievement" , "Top; peak" , "Summit - zenith" , "Summit, crowning point" , "Summit of achievement" .)