When the world was created, there were no divine entities looking over the inhabitants. It was an empty Pantheon. So humanity was left alone to their devices, unknown that within their own hands was the power to form the gods. Gods can only exist to those that have the power to make them. So when the world began, the Pantheon of gods had empty spots in their ranks, with much more room to welcome new divine brethren. That is where this begins. When humanity began to fill the seats of Gods.