Biblical peak a painter introduced into painting, say (6)
I believe the answer is:
ararat
'biblical peak' is the definition.
(I've seen this in another clue)
'a painter introduced into painting say' is the wordplay.
'painter' becomes 'RA' (member of the Royal Academy of Arts).
'introduced into' means one lot of letters goes inside another.
'painting say' becomes 'art' (painting is a kind of art).
'a'+'ra'='ara'
'ara' placed within 'art' is 'ARARAT'.
(Other definitions for ararat that I've seen before include "Highest mountain in Turkey" , "Volcanic mount in eastern Turkey" , "Traditional landing place of Noah's ark" , "Final resting place of Noah's ark" , "historic landing site" .)