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

21. The ⁂⁂⁂ _sem_, and the ⁂⁂⁂ _urȧ ḫerp ḥem_, were

priests in the service of Ptah. The latter, who held perhaps the highest sacerdotal office in Egypt, as high priest of Ptah at Memphis, is repeatedly found combining with his own special office that of the _sem_. The ceremony which is here referred to consisted in a grand procession round the walls of the great sanctuary of Ptah, conveying upon a sledge the bark ⁂ in which the coffin of the god was supposed to rest. Sokaru signifies ‘the coffined,’ and Ptah Sokaru is only a form of Osiris. Abundant details of the ceremony will be found in the plates of M. Mariette’s _Abydos_, I, pl. 36 and following. The king Seti I is represented as a Sem priest presiding at the festival.