In a sermon dated April 17, 1870, Brigham Young taught that everyone, including Adam and Eve, are the sons and daughters of our Heavenly Father:
What are his commandments? Did he ever
teach the people anything that is wrong? If we read the requirements made by
Jesus, by the Father, or by any messenger sent from the Heavens to the children
of men we shall find nothing that will injure any human being or that will
destroy the soul of one of the sons or daughters of Adam and Eve. . . . Some
say, "We are the children of Adam and Eve." So we are, and they are
the children of our Heavenly Father. We are all the children of Adam and Eve,
and they and we are the offspring of Him who dwells in the heavens, the highest
Intelligence that dwells anywhere that we have any knowledge of. (Brigham
Young, "Keeping the Commandments," April 17, 1870, Journal of
Discourses, 26 vols. [Liverpool: Horace S. Eldredge, 1871], 13:311)