"The Son of God became a man to enable men to become sons of God. We do not know -- anyway, I do not know -- how things would have worked if the human race had never rebelled against God and joined the enemy. Perhaps every man would have been "in Christ", would have shared the life of the Son of God, from the moment he was born. Perhaps the natural life would have been drawn up into the uncreated life, at once and as a matter of course. But that is guesswork. You and I are concerned with the way things work now.
And the present state of things is this. The two kinds of life are now not only different (they would always have been that) but actually opposed. The natural life in each of us is something self-centered, something that wants to be petted and admired, to take advantage of other lives, to exploit the whole universe. And especially it wants to be left to itself: to keep well away from anything better, or stronger, or higher than it, anything that might make it feel small. It is afraid of the light and air of the spiritual world, just as people who have been brought up to be dirty are afraid of a bath. And in a sense it is quite right. It knows that if the spiritual life gets hold of it, all its self-centeredness and self-will are going to be killed and it is ready to fight tooth and nail to avoid that."
Thank God, we can change. Can you imagine living through all eternity bound by our present personalities -- feeling hurt, angry, unappreciated, insecure, inferior, bitter, guilty. I say again, "Thank you, God, that you have programmed into man the ability to change".