Instruct in church after meal (5)
I believe the answer is:
teach
'instruct' is the definition.
(I know that instruct can be written as teach)
'church after meal' is the wordplay.
'church' becomes 'ch' (common abbreviation).
'after' says to put letters next to each other.
'meal' becomes 'tea' (tea is a type of meal).
'ch' after 'tea' is 'TEACH'.
'in' is the link.
(Other definitions for teach that I've seen before include "Cheat (anag)" , "Blackbeard" , "Impart knowledge" , "Act as director" , "Provide learning to" .)