George Teasdale declares that polygamy is a "necessity."
George Teasdale, Discourse, Journal of Discourses, 26 vols. (Liverpool: John Henry Smith, 1884): 25:21
How we would be condemned if we dared suggest such a thing as to say that we would give up the first principle of eternal truth! I bear my solemn testimony that plural marriage is as true as any principle that has been revealed from the heavens. I bear my testimony that it is a necessity, and that the Church of Christ in its fullness never existed without it.