Revered platform edit, say (5)
I believe the answer is:
altar
'revered platform' is the definition.
'altar' can be an answer for 'platform' (I've seen this in another clue). I am not certain of the 'revered' bit.
'edit say' is the wordplay.
'edit' becomes 'alter' (altering is a kind of editing).
'say' shows a homophone (sound like).
'alter' sounds like 'ALTAR'.
Can you help me to learn more?
(Other definitions for altar that I've seen before include "Kind of table for religious ceremonies" , "Ceremonial table for religious event" , "Church focus for ritual" , "Church focal point" , "Sacred table" .)