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

son of Seb and Renenut. The etymology of the name is indicated in the Pyramid texts. ⁂⁂⁂⁂ _neḥbu_ is to ‘carry, sustain, support’ (whence ⁂⁂⁂⁂ _neḥbet_ a neck, and ⁂⁂⁂⁂ _neḥb_ a yoke), and the rest of the word is the plural of _ka_, which is susceptible of more than one meaning. It might signify the divine or human _ka_, but the word is sometimes (_e.g._, Todt., 125, 32) written ⁂ ‘victuals.’ The god is one of the forty-two judges of the dead, and in some copies of the Book of the Dead he is described as coming forth from his ⁂⁂⁂, a word most frequently used for the source of the Nile. The serpent ⁂ which is a most frequent determinative of the name, is an additional reason for identifying this god with the Nile: a conclusion which seems fully justified by the Pyramid texts, which speak of him as Water ⁂, and describe him as ⁂⁂⁂⁂⁂⁂, “of many windings.” (See Pepi I, 341 and 487.)