Table in church to change did you say? (5)
I believe the answer is:
altar
'table in church' is the definition.
'altar' can be an answer for 'table' (altar is a kind of table). I am not certain of the 'in church' bit.
'change did you say?' is the wordplay.
'change' becomes 'alter' (altering is a kind of changing).
'did you say?' shows a homophone (sound like).
'alter' sounds like 'ALTAR'.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for altar that I've seen before include "Place of sacrifice" , "A ceremonial table for worshipping" , "Sacrificial table" , "Where we will vow" , "Focus of church worship" .)