“Not only was Cain called to suffer, but because of his wickedness he became the father of an inferior race. A curse was placed upon him [black skin] and that curse has been continued through his lineage and must do so while time endures. Millions of souls have come into this world cursed with a black skin and have been denied the privilege of Priesthood and the fullness of the blessings of the gospel. These are the descendants of Cain. Moreover, they have been made to feel their inferiority and have been separated from the rest of mankind from the beginning … we will also hope that blessings may eventually be given to our Negro brethren, for they are our brethren —children of God— notwithstanding their black covering emblematical of eternal darkness.”
Joseph Fielding Smith, The Way to Perfection (Salt Lake City, UT: Genealogical Society of the Church of Jesus Christ of Latter-day Saints, Ninth edition/1951), 101-102.