God exists, in the mind of people, because nature is totally impersonal. The existence of God or other supernatural forces. We all believe that God is always with us and protect us, always be in our heart and mind. God exist in people's mind because their mind is actually filled with faith. God in reality exists and also have a lot of things which make it prove that God is anywhere and can help anyone, and why wouldn't be in people mind because whenever someone need help God is there for that person so that's why people believe in God.