They are like the soul of the Goddess. They are the three Fates. Everything is subject to them. Even the gods and goddesses have their own fates. Governments and historical times.
Nobody can escape their fates.
They are what must be. That is their assigment. But even the weather is their domain,becouse its random creation of multi layered forces, the four elements. They are the fifth element, the spirit in all things. And the beautiful.