Recently I've been studying a lot about the Book of Mormon: Another Testament of Jesus Christ. And my testimony of this book has been strengthened, because the more I pray about it the more I read from it and the more I study it, the more I know how true it is.
The Book of Mormon is Another Testament of Jesus Christ, as Joseph Smith said, "It is the keystone of our religion." This Book is so vital to us because if the book were not true then there would be nothing else. But the book is true! We have a prophet of God, we have apostles, we have the priesthood and all of the ordincances of the gospel. It is vital to our salvation and what happens to us after we die. If we choose to study this volume of scripture and other scriptures and live the commandments taught therein that is commanded of God we may have eternal life. I know it too be true and would like to invite all others to know the same thing. Joseph Smith also said this of The Book of Mormon, "A man [and woman] would get nearer to God by abiding by its precepts." In closing here are a few paragraphs from the Introduction:
"We invite all men everywhere to read the Book of Mormon, to ponder in their hearts the message it contains, and then to ask God, the Eternal Father, in the name of Christ if the book is true. Those who pursue this course and ask in faith will gain a testimony of its truth and divinity by the power of the Holy Ghost. (See Moroni 10:3–5.)
Those who gain this divine witness from the Holy Spirit will also come to know by the same power that Jesus Christ is the Savior of the world, that Joseph Smith is his revelator and prophet in these last days, and that The Church of Jesus Christ of Latter-day Saints is the Lord’s kingdom once again established on the earth, preparatory to the second coming of the Messiah."
Ask God our Eternal Father if this book is not true. He will give you an answer.