In Mormonism, members of the Church of Jesus Christ of Latter-day Saints believe in both the Bible and the Book of Mormon. Leaders talk about how the Book of Mormon is the "Keystone" of their religion. They also talk about how both books are not overpowering one another, but contradict each other. They said the the Book of Mormon is "Another testament of Jesus Christ."
The Bible, one of the most published books in American history, gives an account of Jesus Christ and the prophets in the Middle East, mainly Israel. In the Bible, it talks about Jeremiah preaching to the people of Jerusalem to repent. In that time frame, there was another prophet. His name is Lehi. He also preached to the people of Jerusalem to repent. They wanted to kill him, so he and his family fled. That account is recorded in the Book of Mormon. The Book of Mormon gives an account of Prophets in the America's. It talks about many battles, and the destruction of two peoples, the Nephites, and the Jaredites. It also has an account of Jesus Christ coming to the America's, ordaining disciples there.
Many People think the the Book of Mormon is a fraud, or is even a cult of some kind. There are many testimonies of many people who read the book for the first time, and converted to the Church.
Book of Mormon