The patriarchal order is a part of the Melchizedek Priesthood which enables endowed and worthy men to preside over their posterity in time and eternity.In Nauvoo, Illinois on August 27, 1843, while the Nauvoo Temple was being constructed, Joseph Smith, the first president of the restored Church of Christ, taught, using Hebrews 7[1] as background material, the "Three Grand Orders" of priesthood:[2][3] Eight years earlier, Smith had dictated a revelation that declared, "There are, in the church, two priesthoods, namely, the Melchizedek and Aaronic, including the Levitical Priesthood".
It was the first Latter Day Saint temple where the ordinance of celestial marriage was practiced.
The oath of the priesthood referenced in Hebrews 7:20–21, 7:28 was revealed to Smith in a revelation in Kirtland, Ohio on September 22 and 23, 1832.
Bruce R. McConkie wrote regarding the subject: The word "patriarch" means "Father-Ruler"[citation needed] and part of the doctrine of the LDS Church is that there cannot be a patriarch without a matriarch.
Latter-day Saints believe that a man and a woman can be joined in marriage for all eternity if done with the proper authority and in the temple.