The Brotherhood of the Radiance and the Blessed Radiance

• Blessed Radiance: more than just a concept, the Brotherhood seeks to bring this about ... it is in Glantri. It underwent a metamorphasis to become what it is now. Grey and Tessarael have hypothesised that the Blessed Radiance may be a device from the god war in the Home System, which may be used to focus the power of the sun, or may still retain some of the power of the Home System sun - this would make sense if it was originally part of the Home System sun. Freya said the Blessed Radiance isn't known as the Blessed Radiance.
• opposition: there are only two major factions (according to Freya), the Brotherhood of the Radiance and the others. Ilsundal and the other Elven gods oppose Rafiel and the Brotherhood of the Radiance.
• Rad is a power, it's not clear if Rad is a deity. One idea was Rad and Rafiel are the same, I doubt this now. Rad is the leader of the Brotherhood of the Radiance.
• Rafiel is a member of the Brotherhood of the Radiance (radiant shamans)
• Shepherds of Rad: priestlike mages in Glantri, the shepherds of Rad are the keepers of the Blessed Radiance, if we could talk to high up members in their echelon it may help ... It's fairly clear they worship Rad, whether intentionally or not.