In James Blish's The Day After Judgement:
after
the original God has apparently died or possibly withdrawn, the new
God, Satan, addresses the last magicians in the great hall of
Pandemonium in the Citadel of Dis.
In Mike Carey's Lucifer:
after
the original God has withdrawn, the new God and Lucifer address the
angelic host, the Hellkin and the Army of the Damned in a great
amphitheatre of the fallen Silver City.
Despite the many differences between these two scenes, I have tried to bring out some parallels:
in both cases, the original God is no longer around;
but, also in both cases, He has been replaced;
His replacement addresses the main movers;
the Devil plays a key role - in the first case, he is the replacement whereas, in the second case, he has prepared her;
the address occurs in a suitable location, either in Hell or in the fallen Heavenly City.