Ann Eliza Young quotes Brigham as describing the endowment as "Celestial Masonry."
Ann Eliza Young, Wife No. 19 Or, the Story of a Life of Bondage (Hartford, Conn: Dustin, Gilman, and Co., 1876), 371
It is claimed that the mysterious rites were taken from Masonry, and that the Endowments are a direct outgrowth of the secret society. Brigham Young delights, I know, to speak of it as "Celestial Masonry," but I am very sure all good Masons would repudiate it and its teachings.