If there is a God as written in the holy books, that is, one who loves his servants very much. So why all this pain? And why is it hidden from us? Here is my answers and reasons: I believe there is a creator and he truly loves his servants. (When societies fell into a dead end or sank into evil, He sent prophets to give hope to the good people within them.) Our lifespan in this life is limited. But we are made up of energy. As you know, energy does not disappear. Yes, it changes shape, but it never disappears. From here, we can say that our lifespan is endless. So, we are preparing our future in this world. How we react to pain and negativity is not as important as how we react to happiness and pleasantness. Since these concepts are extreme, they are always on the agenda and are questioned. The truth is that all our reactions and the way we perceive reality will determine our future. It is not actually hidden from us. Because it is a metaphysical entity. In other words, it is impossible to prove its existence with physical scientific methods in this world. In short, it is not possible to use objective experimental methods. However, it is possible to prove it with subjective experiments. Yes, we can only prove it to ourselves. If I do not bore you, I can suggest methods on how this can happen.

P.S.: 1-Sometimes I used "it" and sometimes "he". Because it is not human and therefore cannot have a gender. 2- There is definitely only one religion. All the religions(People think there is more than one religion.) and prophets that have come so far have said the same thing. And they have brought their messages to the people of good character in the society to which they were sent. 3- Prophets have been the communication channels between God and humans. Because God is a metaphysical being, yet He is the creator and cause of everything, and thus He sent His messages by contacting a single physical being. Even the prophets thought they were dreaming at first.