Brigham Young teaches that the twelve tribes will be gathered by, and be judged by the Ancient of Days.
Brigham Young, "The Improved Condition of the Saints—Preparation Necessary to Build Up the Centre Stake of Zion—the Law of Moses Given in Consequence of Rebellion—No True Pleasure Without the Spirit of the Lord," Journal of Discourses, 26 vols. (Liverpool: B. Young, Jun., 1867), 11:326, 327
It is true that we read in the Bible with regard to the twelve tribes of Israel, that they will be gathered together tribe by tribe, and that when they are so gathered they will hear the sentence of the Ancient of Days. . . . They will come up tribe by tribe, and the Ancient of Days, He who led Abraham, and talked to Noah, Enoch, Isaac, and Jacob, that very Being will come and judge the twelve tribes of Israel.