Heaven or hell

I opened my eyes and felt dizzy. I remembered being with friends and trying to travel through dimensions using a book. It seems like I fainted. Did I succeed? Am I in another universe? The important thing is that the book is still with me. People are staring at me, but they are slightly different from us. This means I will encounter even stranger creatures than our own. Their skin is very pale, and they are slightly shorter than us, but not like dwarfs. Their skin colors are strange, and their hair is very white. They seem frightened and speak a strange language, yelling as they took my book. I started running, trying to escape. It appears we are in a forest, and thank God I'm in a forest and not a city, or else the police would have caught me. I saw a small bridge over a river, so I dug a hole about two meters underground near it using my fingernails. It took time and effort, but caution is necessary. I hid the book there and covered the soil. I felt tired and scared. Everyone knows the feeling of traveling to a city alone, so what can you imagine about traveling to a different universe? I decided to sleep here and move towards the city in the morning. Where am I? What happened? Where is the book? I see nothing but whiteness. Am I even seeing? Did I die, and is this heaven? Its beauty is worse than its horror. I can't even describe what I see and feel. A large door opens out of nowhere with a sign above it. "Those who believe in God may enter, and those who don't believe may not." Here, I confirmed that I am not in the real world but in a place no different from heaven or hell. Even though curiosity will drive everyone to that door, I, in my life, believed in the existence of a creator for everything because it is impossible for all of this to be a mere illusion. I entered, but there was nothing. The first place was white, and this one is green. I still don't understand what's happening. Suddenly, another door appears, and above it, it says, "You passed the first test because you believe in God. We await you in the second test..." Something forcefully takes me, like an instant transition. I entered a place full of strange creatures, each with a number above them. There are some similar creatures wearing a uniform similar to the members, and they are scattered in an organized manner. Some arguments are happening in a strange language.