There is a fairly simple question that can be asked to determine if planet Earth is real, exists, or is God's creation.
There are machine guns in this world. Machine guns full of bullets. The bullets are projectiles which shoot out of this gun and may penetrate other objects. Upon doing so it is capable of ripping holes in things, and if those things are biological organisms it is capable of mowing them down and destroying them and killing them.
Now, that's simply physical fact. That's what the gun does. That's how it functions. That's what it's capable of.
It does not matter if you forgive the gun, it will still function this way. It does not matter if you see it with false perception and hate it, or see it with true perception and love it. It will still function as a bullet-launching death machine, capable of seriously damaging and destroying anything it touches.
Your healed perceptions of the machine gun do not stop it from launching bullets. Nor does your perception change the shape of the gun from being still in the form of a gun. It still has a barrel and a set of machinery and metal bullets. It doesn't matter how many years you've been doing ACIM spiritual practices, it in no way changes a single fact about how that object functions.
Now you have to ask yourself, whether God in his infinite mercy and wisdom and gentleness and love, would EVER conceive of such an object? Because if that machine gun exists, and has reality, then it MUST be of God. It must be part of God's will. It must be what he wants. And God himself must endorse it. In fact God must have designed it himself and co-created it.
How does that sit with you? Even if you forgive the machine gun and send it love and do not blame it and do not project sin or guilt onto it, does it still have a design and capacity for mowing down citizens? Yes it does. Even if you are high on a cloud of spiritual consciousness, does the machine gun still operate according to physical laws? Yes it does. Is it still capable of murder regardless of how spiritual you become? Yes it is.
So you have to ask yourself, would God create such a device? Would God's world, which should be heaven, contain such a device? Could God have willed that such a device be possible? That there can be scenarios in which some of God's other heavenly-created objects are capable of being utterly ripped apart and destroyed in a matter of seconds? Is such a thing allowed and possible and sanctioned in heaven? Is it even a POSSIBILITY, that in God's perfect absolutely infinite immortal reality, that there can be things mowed down with metal bullets?
You have to come to terms with this because the answer is quite important. The ONLY WAY that planet Earth, the physical planet, the solid matter, all of space and time, can have come from God or be in any way God's will, is if God is a maker of weapons. And even if we lift away labels such as weapons and say "that's a lovely beautiful piece of machinery isn't it" in some kind of blissful state of rose-tinted-glasses, we STILL are going to have to accept that IF IT IS PART OF THE KINGDOM, GOD WANTS OBJECTS TO BE BLASTED APART.
So we're really asking now, what is God's nature and will? Can you sleep at night knowing that God is a God who facilitates and supports and contributes to the making of weapons of mass destruction? Is that within God's laws? Does God allow AND support such a thing? Because if he does, what kind of a God is that? And how would a loving, beautiful, gentle, kind, happy God, come up with a design for a very effective "killing machine" as part of HEAVEN?
I think MOST sane or semi-sane people in the world would have to agree, that if God is loving it is HIGHLY unlikely that God could ever be conceived of as personally willing the creation of a machine gun. Not even if the gun is radically forgiven, which has no real effect on the fact that it is still capable of being used to mow bodies down. And regardless of how beautiful and shiny the paint is, regardless of how lovely the sights and sounds of bullets flying are, the fact remains the machinery still functions to attack and destroy. Is is okay with you that God's kingdom, immortal and unattackable, indestructible, has items in it which can in fact still destroy things? God would be contradictory would he not? And heaven would be full of holes.
The only sane conclusion we can come to is that either God is murderous and is responsible for personally willing the making of machine guns and bullets and death and destruction, OR God is not that kind of a God. And if God is not like that, NOTHING like that can exist. Because anything that does exist, HAS to be a part of God's mind and will. Part of his heart. God has to love it and create it otherwise it is nothing and nowhere.
Either, machine guns exist and are real and God created planet Earth and physical bodies and space and time and all the galaxies, which means God must be murderous and cruel, OR, God would never sanely allow, make possible, condone, or contribute to, the making of such objects. And therefore, if God did not create machine guns, planet earth is absolutely unreal, bodies do not exist, destructible objects are absolutely nothing, human bodies don't exist, and there is no world.
Personally for me I can only accept that God's most-beloved Kingdom of heaven CANNOT EVER CONTAIN such objects. Not in any way. Not with any kind of perception or repurposing. Not merely that they don't exist, or haven't been created yet, but that even the POTENTIAL for them to be created does not exist. It must be IMPOSSIBLE for weapons to exist in God. I absolutely cannot bring myself to ever accept or conceive of being able to be at peace and loving with God with the loophole that he is a maker of murderous articles. They simply CANNOT EXIST in heaven's reality.
To me, this is so clear and black and white, there is absolutely no way that there is ANY OTHER way for the machine gun to exist and for it to simultaneously imply that God is benevolent. Either God is loving and exists and is real, OR, machine guns exist and God is murderous and self destructive. That's the choice you have to make. Either earth and bodies exist along with machine guns, OR THEY DO NOT. And quite frankly, we should ALL be recognizing by now that THEY DO NOT.
There will be no machine guns in heaven. Not today. Not ever. And similarly, there are no bodies, and no planet Earth. That is A Course in Miracle's teaching. There IS no other interpretation.