What about "free will" in eternity? I actually know some people who claim that people will have "free will" in eternity and have the real possibility of rebelling even in heaven (a la Satan), but would say that such is highly improbable.Because they believe that freedom is essential to God's character, that He bestowed freedom on man and all his sentient beings, and never removed that freedom. They believe that man has free will before and after conversion. God compels no one to come to Him, and compels no one to stay once they have come to Him.
I would say that, statistically speaking, given eternity, if saints have the "free will" to rebel, eventually every last person would end up in hell. At some point eternity is long enough that God would lose all His saints.
Of course, these same people do not think through their position enough. If people in eternal bliss have the real possibility of rebellion (regardless how improbable), why cannot those in hell have the same "free will" to switch over to heaven? Why is it that someone can lose heaven and go to hell, yet cannot lose hell and go to heaven?