THE SPAULDING-RIGDON theory of the authorship of the Book of Mormon is based on a heterogeneous assortment of letters and affidavits collected between 1833 and 1900. When heaped together without regard to chronology, as in Charles A. Shook's True Origin of the Book of Mormon, and without any consideration of the character of either Joseph Smith or Sidney Rigdon, they seem impressive. But the theory is based first of all on the untenable assumption that Joseph Smith had neither the wit nor the learning to write the Book of Mormon, and it disregards the fact that the style of the Book of Mormon is identical with that of the Mormon prophet's later writings, such as the Doctrine and Covenants and Pearl of Great Price, but is completely alien to the turgid rhetoric of Rigdon's sermons.

Protagonists of the theory do not explain why, if Rigdon wrote the Book of Mormon, he was content to let Joseph Smith found the Mormon Church and hold absolute dominion over it throughout the years, so secure in his position that he several times threatened Rigdon with excommunication when Rigdon opposed his policies. But most important, there is no good evidence to show that Rigdon and Smith ever met before Rigdon's conversion late in 1830. There is, on the contrary, abundant proof that between September 1827 and June 1829, when the Book of Mormon was being written, Rigdon was a successful Campbellite preacher in northern Ohio, who if conniving secretly with Joseph Smith, three hundred miles east, was so accomplished a deceiver that none of his intimate friends ever entertained the slightest suspicion of it.

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Rigdon denied the Spaulding story throughout his life. When his son John questioned him shortly before his death, he re-plied: "My son, I can swear before high heaven that what I have told you about the origin of that book is true. Your mother and sister, Mrs. Athalia Robinson, were present when that book was handed to me in Mentor, Ohio, and all I ever knew about the origin of that book was that Parley P. Pratt, Oliver Cowdery, Joseph Smith and the witnesses who claimed they saw the plates have told me, and in all my intimacy with Joseph Smith he never told me but one story, and that was that he found it engraved upon gold plates in a hill near Palmyra. New York, and that an angel had appeared to him and directed him where to find it. . . ."