Our place with God in eternity is our most valuable asset by far. God had to do a lot to get us to that point. Jesus had to keep the Law perfectly. He had to absorb the worst part of the Law’s prescribed punishment for our sin: being forsaken by the Father. The Holy Spirit had to break through our sin hardened mind to give us a connection to Jesus. The Spirit also has to shepherd us through the rest of our lives without us falling away. So much work for God.
But once we are securely in Heaven, we can never fall away again, right? Let’s examine that. There is precious little written about this question, but the question is not uncommon. Let’s start with Adam and Eve. What caused them to fall?
Adam and Eve did not initially have bodies infected by sinful nature. Neither will we in eternity. They did not know what evil was. I think we still will know what it is. They had only one rule, the rest came naturally to them. I think good will come naturally to us in Heaven. I know of no equivalent to the Tree of the Knowledge of Good and Evil in Heaven or the New Earth. The Tree of Life will be around (see Revelation 22). They had to contend with Satan’s temptations, we will not.
Adam and Eve present the nearest analogy for what we will be in eternity. But it isn’t a one-to-one correspondence. God made humans to have a perfectly free will. Our will hasn’t been free since they sinned. Will we be fully free in eternity? If so, then we must be free to sin against God and fall away. We will know what evil is. At least we will at first. This thought is frightening. Currently, we dare not trust ourselves, because we have had a sinful nature our whole existence so far and it is not trustworthy. Heaven will be different. I don’t feel like I can get my head inside of what it will be like, however.
Angels know what evil is. They are free willed. A third of them fell from God and were cast out. Still two-thirds did not. The fallen third had Satan’s influence. I don’t know if this is comforting or disconcerting. It does show that you can be free-willed, know evil, and not choose it.
Perhaps this whole discussion adds some light to the strange text of Isaiah 65. The passage is about the New Earth. It says so at the beginning. Still it speaks of death and being accursed even though the rest of scripture speaks of eternal life.
No more shall there be in it
an infant who lives but a few days,
or an old man who does not fill out his days,
for the young man shall die a hundred years old,
and the sinner a hundred years old shall be accursed.Isaiah 65:20 (ESV)
It is clear from the rest of Scripture that Heaven isn’t just a long life. Perhaps God wasn’t ready to roll out the idea of eternal life at the time of Isaiah. The passage above could be read as hypothetical. I think that is what the answer to our initial question actually is.
Hypothetically, a person in Heaven and the New Earth could choose evil and be cast out of God’s presence. We will have nothing internal to drive us to such a decision and nothing externally to tempt us to such a decision. And we will not be so stupid as to think that we can be God and do things any better than Him. Fully satisfied and loved, we will eventually forget that sin is even possible.
“For behold, I create new heavens
and a new earth,
and the former things shall not be remembered
or come into mind.Isaiah 65:17 (ESV)
We have plenty to worry about while still in this world. We don’t have to worry about the next. The ongoing indwelling of the Holy Spirit will keep us in place without robbing us of our will. Falling away will not be rare. It will be non-existent.