(Keep in mind this is more like the formation of a thought, as opposed to a well established viewpoint.)
If you die and go to heaven, are you unable to “mess up” from that point on? I don’t mean this in a “free-will” sort of way, as if suggesting that once a person gets to heaven they’re a robot or something, unable to do anything but strum a harp and bounce around from cloud to cloud forever and ever.
What I mean is, if Lucifer, as a created being, was able to … fall, to sin, while in the presence of God (as did Adam and Eve while in the garden, although there was some nice looking fruit involved); then do you or I have any better chance at eternal security after death? Or did I just miss that in the Salvation* fine print of one of the Gospels, like so much legal copy at the bottom of televised car ads.
Put another way: Even if you’re not a once-saved-always-saved Calvinist in this life, if you believe once-in-heaven-always-in-heaven, would that be a sort of Posthumous Calvinism**?
Theoretically, even if I live a good Christian life, even if I accept Jesus as my personal lord and live by the law of love, even if I spread the good word and get welcomed into heaven; I might be able to still fall from grace after the fact. And if that happens after the earth is finally judged and destroyed with fire (and all the rest of that Revelation stuff), it would seem the only other place to be sent would be Hell.
But… Hell is the place reserved for people who either willingly reject or never accept Christ in this life, right?
But (I know, another but) if this is all theoretically possible, which I think you must admit it is at the very least an interesting topic, then what’s the point of serving God and getting into heaven in the first place?
I’m sure I’m missing some obvious components right now, but it just seems all too likely that if Lucifer could fall before original sin, if he and a third of the angels could rebel, (and they supposedly didn’t even have fee will, but either way), then any one of us could do the same in the hereafter.
Given enough time, and eternity seems awfully long, I think heaven could eventually be a very quiet place.