The Egyptian Book of the dead by P. Le Page Renouf and Edouard Naville

2. ⁂⁂⁂ or ⁂⁂⁂⁂⁂ are two divinities in opposition

or contrast, like Set and Horus (Chapter 17, 25) or the sister goddesses named ⁂⁂⁂⁂ _Mertȧ_ (37, 1). Thoth is the umpire between Set and Horus (Darkness and Light) and mediates between them, but he and Râ (the Moon and Sun) are (Teta, l. 69) spoken of as the two Rehu gods travelling over the sky.] ------------------------------------