Nicene and Post-Nicene Fathers, Vol. III: Doctrinal Treat...
Chapter 57.—The Condition of the Church in Heaven.
But of that part of the Church which is in heaven what can we say, except that no wicked one is found in it, and that no one has fallen from it, or shall ever fall from it, since the time that “God spared not the angels that sinned,” as the Apostle Peter writes, “but cast them down to hell, and delivered them into chains of darkness, to be reserved unto judgment?” 1194