This text draws together Egyptological advances in our understanding of the cult of Ra, from the 3rd Millennium BC to the Roman conquest of Egypt and the rise of Christianity. It explores Egyptian sources for the character of Ra, his pivotal role in creation, and the way in which Egyptians expressed the world as physical matter unfurling from the sun. The core of the book focuses on on the epicentre of the cult: the temple of Ra at Iunu.