Eliza R. Snow is recorded as stating that Joseph taught that the faithful would become an Adam or Eve on their own earth.
"Salt Lake City Twentieth Ward Relief Society; Salt Lake City, Utah Territory," June 3, 1869, LR 9455 14, Church History Library
Joseph Smith, said every man, & woman, who was faithful in this world, would go fourth on an earth as Adam, and Eve. That is but one item of the blessings God has in store for us if we are faithful.