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

however, requires its presence. It may nevertheless be asked: how can the Sun-god be said to be shining in the night? The question might as pertinently be asked: how can Horus (in the very same line) be said to come forth in the night? The answer to both these questions is that the Sun, whether as Rā or as Horus or Osiris, shines in the night through the agency of Thoth, the Moon. For further information see Notes to next chapter.