I am looking for some information on "Rites of Sepulchre"?

It is an ancient Egyptian ritual taught by Isis in the Mystery Schools in the world of spirit. It was used by Esenes around the time of the birth of Christ. If it is probably kept secret, but I would have to say that it is around today. If you have some information about it and don't want to post it here. Feel free to email me. Thanks!