More than 500 following pop diva out of church (6)
I believe the answer is:
beyond
'more than' is the definition.
'500 following pop diva out of church' is the wordplay.
'500' becomes 'd' (Roman numeral for 500).
'following' is a charade indicator (letters next to each other).
'pop diva' becomes 'beyonce'.
'out of' indicates named letters should be taken away.
'church' becomes 'ce' (abbreviation for Church of England).
'beyonce' with 'ce' taken away is 'beyon'.
'd' after 'beyon' is 'BEYOND'.
(Other definitions for beyond that I've seen before include "On the far side of" , "Outside the range of" , "(The) hereafter" , "Further than or outside the scope of" , "Farther than or outside" .)