The other gods, the gods of the popular mythology were understood in the esoteric religion to be either personified attributes of the Deity, or parts of the nature which he had created, considered as informed and inspired by him. Num or Kneph represented the creative mind, Phthah the creative hand, or act of creating; Maut represented matter, Ra the sun, Khons the moon, Seb the earth, Khem the generative power in nature, Nut the upper hemisphere of the heavens, Athor the lower world or under hemisphere; Thoth personified the Divine Wisdom, Ammon perhaps the Divine mysteriousness or incomprehensibility, Osiris the Divine Goodness. It is difficult in many cases to fix on the exact quality, act, or part of nature intended; but the principle admits of no doubt. No educated Egyptian conceived of the popular gods as really separate and distinct beings. All knew that there was but One God, and understood that, when worship was offered to Khem, or Kneph, or Maut, or Thoth, or Ammon, the One God was worshipped under some one of his forms or in some one of his aspects. He was every god, and thus all the gods' names were interchangeable, and in one and the same hymn we may find a god, say Ammon, addressed also as Ra and Khem and Turn and Horus and Khepra; or Hapi, the Nile-god, invoked as Ammon and Phthah; or Osiris as Ra and Thoth; or, in fact, any god invoked as almost any other. If there be a limit, it is in respect of the evil deities, whose names are not given to the good ones.