Stormy debates involving head of holy chapel (8)
I believe the answer is:
bethesda
'chapel' is the definition.
(I've seen this before)
'stormy debates involving head of holy' is the wordplay.
'stormy' indicates anagramming the letters.
'involving' indicates putting letters inside.
'head of' indicates taking the first letters.
The first letter of 'holy' is 'h'.
'debates' anagrammed gives 'betesda'.
'betesda' enclosing 'h' is 'BETHESDA'.
(Other definitions for bethesda that I've seen before include "Healing pool (Jerusalem)" , "Chapel" , "church" .)