Get to give a sermon without introduction (5)
I believe the answer is:
reach
'get to' is the definition.
(synonyms)
'give a sermon without introduction' is the wordplay.
'give a sermon' becomes 'preach' (I've seen this before).
'without introduction' means to remove the first letter.
'preach' with its first letter removed is 'REACH'.
(Other definitions for reach that I've seen before include "Get to < throw up in the old" , "Stretch of a river between two bends" , "Get as far as" , "Get to; extent" , "bay" .)