Wilford Woodruff reports that Brigham stated interracial marriage was worthy of death.
Wilford Woodruff, Journal, January 16, 1852 MS 1352, Church History Library
Any man having one drop of the seed of Cane in his in him cannot hold the priesthood & if no other prophet ever spake it before I will say it now in the name of Jesus Christ I know it is true & others know it the Negro cannot hold one particle of government but the day will come when all the seed of Cane will be redeemed & have all the blessings we have now & great deal more but the seed of Abel will be ahead of the seed of Cane to all Etarnity let me consent to day to mingle my seed with the seed of Cane it would bring the same curse upon me and it would upon any man and if any man mingle his seed with the seed of Cane the only way he could get rid of it or have salvation would be to come forward to have his head cut off & spill his blood upon the ground it would also take the life of his children.