The following work was begun twenty-two years ago, in England, when the author was in that land on a Mission, as assistant Editor of the Latter-day Saints' Millennial Star. It was the author's design then to make the treatise on the Book of Mormon the first volume under the general title "New Witnesses for God"; but after some progress in collecting and arranging the materials had been made, the thought occurred to him that the Prophet Joseph Smith in chronological order, if not in importance, preceded the Book of Mormon in the introduction of God's Witnesses in this last and great dispensation. The materials of this work, therefore, so far as they had been collected, were laid aside and work was begun on the treatise of Joseph Smith as a Witness for God; which, however, because of many other demands upon the author's time, was not published until 1895.  
Meantime work was continued from time to time upon the treatise of the Book of Mormon; and in 1903-4-5, the materials were used, substantially as in their present form, as Manuals for the Senior Classes of the Young Men's Mutual Improvement Associations. The work has undergone a thorough revision at the hands of the author, and is now to take the place in his writings designed for it so long ago.
 
While the coming forth of the Book of Mormon is but an incident in God's great work of the last days, and the book itself subordinate to some other facts in that work, still the incident of its coming forth and the book are facts of such importance that the whole work of God may be said, in a manner, to stand or fall with them. That is to say, if the origin of the Book of Mormon could be proved to be other than that set forth by Joseph Smith; if the book itself could be proved to be other than it claims to be, viz., and chiefly, an abridged history of the ancient inhabitants of America, a volume of scripture containing a message from God to the people to whom it was written—"to the Lamanites [American Indians], who are a remnant of the house of Israel; and also to Jew and Gentile; written by way of commandment, and also by the spirit of prophecy and revelation"—if, I say, the Book of Mormon could be proved to be other than this, then the Church of Jesus Christ of Latter-day Saints, and its message and doctrines, which, in some respects, may be said to have arisen out of the Book of Mormon, must fall; for if that book is other than it claims to be; if its origin is other than that ascribed to it by Joseph Smith, then Joseph Smith says that which is untrue; he is a false prophet of false prophets; and all he taught, and all his claims to inspiration and divine authority, are not only vain but wicked; and all that he did as a religious teacher is not only useless, but mischievous beyond human comprehending.
 
Nor does this statement of the case set forth sufficiently strong the situation. Those who accept the Book of Mormon for what it claims to be, may not so state their case that its security chiefly rests on the inability of its opponents to prove a negative. The affirmative side of the question belongs to us who hold out the Book of Mormon to the world as a revelation from God. The burden of proof rests upon us in every discussion. It is not enough for us to say that if the origin of the Book of Mormon is proved to be other than that set forth by Joseph Smith; if the book itself be proved to be other than it claims to be, then the institution known as "Mormonism" must fall. We must do more than rest our case on the inability of opponents to prove a negative. The security of "Mormonism" rests on quite other grounds; and, from a forensic standpoint, upon much more precarious ground; for not only must the Book of Mormon not be proved to have other origin than that which we set forth, or be other than what we say it is, but we must prove its origin to be what we say it is, and the book itself to be what we proclaim it to be—a revelation from God.
 
From these remarks the reader will observe, I trust, that while I refer to the coming forth of the Book of Mormon as an incident, and the book itself as a fact subordinate to some other facts connected with the great work of God in the last days, I have by no means underrated the importance of the Book of Mormon in its relation to God's work of the last days as a whole. It is to meet the requirements of this situation that I have been anxious to add my contribution to the gradually accumulating literature on this subject, both within and without the Church, both upon the affirmative and the negative side of the question.
 
My treatise is divided into four parts:
 
I.—The Value of the Book of Mormon as ............