Despite three of the world's main religions being monotheistic in nature, they were not the first to adopt such a concept. The belief in a sole or chief deity is decidedly older, with roots in Persia and, perhaps surprisingly, in Egypt, where one pharaoh dared to topple the age-old religious order in favor of something new and radical. Tune in this week to learn about Atenism, Ancient Egypt's monotheistic faith, as well as the man behind it, the great Akhenaten!