What were the first religious beliefs of ancient people?

Over time, ancient people began to deify the forces of nature, as well as to believe in the spirits of ancestors or the spirits of animals that accompanied them all their lives. Thus, religious cults began to emerge. People believed that besides them, there was something inexplicable and supernatural that governs all natural processes and even their lives. Then people began to have gods, each of whom was responsible for certain functions. Some ancient peoples were monotheistic.