Found in a book called “View from Above,” by Brian Stewart. It was put on everyone’s windshields in an Arizona State University parking lot one day. The book is religious/historical fiction written from God’s point of view. Here, God describes heaven:

It has walls over a thousand miles high being made of elements your most brilliant teams of scientists would be unable to recreating. I have given it substance, yet slowed down the atomic speeds, so all of the components can be seen through and passed through with the power of thought. The gates are fashioned of huge round pearls and are set in walls that contain every color of the prism. For mortal eyes it is quite overwhelming. Even Las Vegas with all its lights is but an ember when compared to the beauty of Heaven, even when glimpsed from afar. I set within its walls a crystal stream containing the most basic building blocks of My universe - hydrogen and oxygen, that is shaded by fully grown trees bearing every fruit you have enjoyed on earth plus species which only exist here. I planted them, not for their nourishment, but for their beautiful aromas. They are continually in bloom - one species after another - giving Heaven a fragrance that is intoxicatingly delightful.