Religion is important in my WiP.
There are three gods, called the Alfa. They came from space one thousand years ago, and brought magic. The Alfa mated with the humans of this planet, and their descendants carried the gift of magic, becoming the Divira race. The ones without magic are the Efira. The Alfa foresaw a terrible future, and went into sleep to wake up when they were needed.
The series revolves around preventing the extinction of magic, since no Divira have been born for twenty years. To do this, the last descendants of the Alfa seek to awaken the sleeping gods.
Near the end of the book, it's revealed that the Alfa strengthened their magic with time, with every generation giving power to them. This allows them to trascend physical death.