Bishop has not so much to call holy (5)
I believe the answer is:
bless
'much to call holy' is the definition.
I can't tell whether this definition defines the answer.
'bishop has not' is the wordplay.
'bishop' becomes 'B' (chess abbreviation).
'has' is a charade indicator (letters next to each other).
'not' becomes 'less' (I've seen this in other clues).
'b'+'less'='BLESS'
'so' is the link.
Can you help me to learn more?
(Other definitions for bless that I've seen before include "Pray for" , "Call on God to favour" , "Render holy" , "Isn't that sweet?" , "Anoint" .)