"World: a natural grand division."
"The world, as defined above, WAS made as a natural grand division, or projecting outward of God. That is why everything which He Created is like Him." (world here refers to heaven not earth)
"This aching world has not the power to touch the living world at all." (earth vs heaven)
"The Garden of Eden, which is described as a literal garden in the Bible, was not originally an actual garden at all. It was merely a mental state of complete need-lack. Even in the literal account, it is noteworthy that the pre-Separation state was essentially one in which man needed nothing." (heaven)
"Heaven is the home of perfect purity. And God created it for YOU." (heaven)
"because your mind has all the means at its disposal to side with Heaven or earth, as it elects." (heaven vs earth)
"Heaven remains your one alternative to this strange world you made and all its ways; its shifting patterns and uncertain goals, its painful pleasures and its tragic joys. God made no contradictions. What denies its own existence and attacks itself is not of Him. He did not make two minds, with Heaven as the glad effect of one, and earth the other's sorry outcome which is Heaven's opposite in every way." (heaven vs earth)
There are many other quotes speaking to this. Heaven is a 'world' that God created through the projecting out of his being and thoughts. It is a world of eternal life. It is not planet Earth. It is the only "real" world, where you can actually fully live and be free.
The Earth, and the physical universe, were MADE by you, in your decision to attempt to side with ego and believe in separation. It is artificial, an illusion, made of death and fear, and does not really exist. It is opposite to Heaven in EVERY way. If you could comprehend the nature of Heaven, it would be obvious how this world is TOTALLY unlike Heaven.
When the illusion of the physical world is recognized, it will disappear. And all that remains will be Heaven. And that "place" will be where you live forever and have lived forever. You will be "in Heaven". That state of Heaven is NOT experienceable on Earth or while in a body, not even in true perception. Nor is it the "real world" or forgiven world. It is BEYOND THIS UNIVERSE.
Layers of separation from God, and the ego's continued use of denial and making things unconscious, resulted in a huge wall of unconsciousness and unawareness standing in-between the physical universe and higher levels. This is the main reason why you have near-total amnesia when you incarnate into a body. Massive-scale denial "separates" this universe from the higher planes and Heaven. Earth is not Heaven. It never will be, and the best you can do here is to see Heaven's reflection, hinting at what is beyond.