Parley P. Pratt recounts learning about the Book of Mormon and testifies of its authenticity.
Parley P. Pratt, The Autobiography of Parley P. Pratt ed. by Parley P. Pratt (Chicago: Law, King, and Law, 1888), 37-40
We visited an old Baptist deacon by the name of Hamlin. After hearing of our appointment for evening, he began to tell of a book, a strange book, a VERY STRANGE BOOK! in his possession, which had been just published. This book, lie said, purported to have been originally written on plates either of gold or brass, by a branch of the tribes of Israel ; and to have been discovered and translated by a young man near Palmyra, in the State of New York, by the aid of visions, or the ministry of angels. I inquired of him how or where the book was to be obtained. He promised me the perusal of it, at his house the next day, if I would call. I felt a strange interest in the book. I preached that evening to a small audience, who appeared to be interested in the truths which I endeavored to unfold to them in a clear and lucid manner from the Scriptures. Next morning I called at his house, where, for the first time, my eyes beheld the "BOOK OF MORMON,"— that book of books — that record which reveals the antiquities of the "New World" back to the remotest ages, and which unfolds the destiny of its people and the world for all time to come ; — that Book which contains the fulness of the gospel of a crucified and risen Redeemer ; — that Book which reveals a lost remnant of Joseph, and which was the principal means, in the hands of God, of directing the entire course of my future life.
I opened it with eagerness, and read its title page. I then read the testimony of several witnesses in relation to the manner of its being found and translated. After this I commenced its contents by course. I read all day; eating was a burden, I had no desire for food; sleep was a burden when the night came, for I preferred reading to sleep.
As I read, the spirit of the Lord was upon me, and I knew and comprehended that the book was true, as plainly and manifestly as a man comprehends and knows that he exists. My joy was now full, as it were, and I rejoiced sufficiently to more than pay me for all the sorrows, sacrifices and toils of my life. I soon determined to see the young man who had been the instrument of its discovery and translation.
I accordingly visited the village of Palmyra, and inquired for the residence of Mr. Joseph Smith. I found it some two or three miles from the village. As I approached the house at the close of the day I overtook a man who was driving some cows, and inquired of him for Mr. Joseph Smith, the translator of the "Book of Mormon." He informed me that he now resided in Pennsylvania; some one hundred miles distant. I inquired for his father, or for any of the family. He told me that his father had gone a journey ; but that his residence was a small house just before me ; and, said he, I am his brother. It was Mr. Hyrum Smith. I informed him of the interest I felt in the Book, and of my desire to learn more about it. He welcomed me to his house, and we spent the night together ; for neither of us felt disposed to sleep. We conversed most of the night, during which I unfolded to him much of my experience in my search after truth, and my success so far ; together with that which I felt was lacking, viz : a commissioned priesthood, or apostleship to minister in the ordinances of God.
He also unfolded to me the particulars of the discovery of the Book ; its translation ; the rise of the Church of Latter-Day Saints, and the commission of his brother Joseph, and others, by revelation and the ministering of angels, by which the apostleship and authority had been again restored to the earth. After duly weighing the whole matter in my mind I saw clearly that these things were true ; and that myself and the whole world were without baptism, and without the ministry and ordinances of God ; and that the whole world had been in this condition since the days that inspiration and revelation had ceased — in short, that this was a new dispensation or commission, in fulfilment of prophecy, and for the restoration of Israel, and to prepare the way before the second coining of the Lord.
In the morning I was compelled to take leave of this worthy man and his family — as I had to hasten back a distance of thirty miles, on foot, to fulfill an appointment in the evening. As we parted he kindly presented me with a copy of the Book of Mormon. I had not yet completed its perusal, and was glad indeed to possess a copy of my own. I travelled on a few miles, and, stopping to rest, I commenced again to read the book. To my great joy I found that Jesus Christ, in his glorified resurrected body, had appeared to the remnant of Joseph on the continent of America, soon after his resurrection and ascension into heaven ; and that he also administered, in person, to the ten lost tribes ; and that through his personal ministry in these countries his gospel was revealed and written in countries and among nations entirely unknown to the Jewish apostles.
Thus revealed, written, handed down and preserved, till revealed in this age by the angels of God, it had, of course, escaped the corruptions of the great and abominable church ; and been preserved in purity.
This discovery greatly enlarged my heart, and filled my soul with joy and gladness. I esteemed the Book, or the information contained in it, more than all the riches of the world. Yes ; I verily believe that I would not at that time have exchanged the knowledge I then possessed, for a legal title to all the beautiful farms, houses, villages and property which passed in review before me, on my journey through one of the most flourishing settlements of western New York.