"Adjust church communion table," we're told (5)
I believe the answer is:
alter
'adjust church' is the definition.
'alter' can be an answer for 'adjust' (I've seen this before). I am unsure of the 'church' bit.
'communion table we're told' is the wordplay.
'communion table' becomes 'altar' (synonyms).
'we're told' indicates a 'sounds like' (homophone) clue.
'altar' is a homophone of 'ALTER'.
Can you help me to learn more?
(Other definitions for alter that I've seen before include "Change, maybe later" , "Revise" , "Adapt" , "Amend" , "shift" .)