No, He cant, because it requires true love of God to occur and that requires a free will choice. If He just changed them without it being a free choice that is not true love.
You're right about that, and I must restate my argument: no, God can't (I suppose) deliberately change a person without their knowledge and consent. But that doesn't mean that God couldn't change a person to a perfect condition with their knowledge and consent - ie, any faithful Christian.
No, I didnt say that. I said during their lifetime, while they are alive on the earth they grow spirtually, it is completed when they die or when Christ comes back whichever happens first.
I think we can forget about "when Jesus comes back" for the time being. Let's concentrate on what we do know - Christians who die. You position is very peculiar indeed. Think about it:
- You claim that there are Christians who die and go to heaven.
- In heaven, they are perfect - knowing all and guaranteed not to use their free will to sin.
- You claim that this is as a result of the spiritual evolution throughout their lifetime.
- But if that were so, we would see people who are like angels, and know that they will go to heaven when they die. We would see, on earth, people who not only do not choose to sin but who are incapable of sin. And, obviously, we don't see these people.
- More than that, it's established Christian dogma that you do not need to live a life of continual purity to go to heaven. All you do is make a decision - even if just a few seconds before your death - to trust in Jesus as your Lord and Saviour. Right? So where's this spiritual development we were talking about? Do you think a lifelong criminal who decides - we assume sincerely - to be a Christian moments before dying, is now in a position where they could never again choose to sin?
- Therefore, for you to be right about the people who go to heaven, their spiritual development over a lifetime is completely inadequate.
- Therefore, for them to be people who would never choose to sin, some other intervention is required. You say this isn't magic, but God transforming people so that they have superhuman levels of virtue necessary to exist in heaven sounds pretty close to the definition of magic.
- Finally, therefore: if God could do this to imperfect humans after their deaths, then He could do it to any human, at any level of imperfection. All that would be required is for them to choose to be saved. So why should God not transform people on Earth who so choose - or, for that matter, in hell?
No, it is like a cat mating with a dog, they are physically capable but they never will. See above about true love why He didn't.
In fact, cats can and do mate with dogs. Rare, but not unknown. Just as your idea that people can sin in heaven, but never would, is nothing more than your personal opinion. There's no way you can guarantee it, because otherwise free will wouldn't be free.