Aten is the name given to the solar disc .
The full title of Akhenaten 's god was Ra - Horus , who rejoices in the horizon in Aten 's name of the light which is in the sun disc .
Aten is the name given to the solar disc , and the full title of Akhenaten 's god was Ra - Horus , who rejoices in the horizon in his name of the light which is in the sun disc .