History of Sanatana

How Sanatan Dharma Started:

The universe was created by Brahma, the creator who made the universe out of himself. After Brahma created the world, it is the power of Vishnu which preserves the world and human beings. As part of the cycle of birth, life and death it is Shiva who will ultimately destroy the universe.

In later Puranic traditions, when we refer to Brahma as the creator, we are referring to the birth of human culture, through the ritual of culture. Culture goes through four phases of childhood (Krita), youth (Treta), maturity (Dvapara) and old age (Kali) before dying (Pralaya) after which there is rebirth. The death is imagined as a flood, and the only thing that survives is the first human, Manu, and the Vedas, saved by Vishnu. This is a recurring event.

It is a cycle of the world.