Institute Manual
This earth has a destiny. Its purpose is to provide a place for men to work their eternal salvation before the Lord. Part of that salvation depends upon their acquiring the necessary ordinances, in righteousness, that will seal them to God and to each other for time and all eternity. But the ordinances are not for the living only. Otherwise, thousands would have been denied these blessings simply because the necessary priesthood power was not on the earth when they were alive.