Another Testament of Jesus Christ
Is the Book of Mormon really another testament of Jesus Christ, as the title page states?
There are some who believe and teach that "The God of Abraham...Isaac and...Jacob", (Exodus 3:6), has fulfilled his mission and given us the Bible therefor there is no need for God to give us any more scripture.
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<< There is a story about three Monkeys. They choose to not see or hear what is going on around them. They have turned a blind eye to what is taking place. They also have chosen to not speak.
Why would a God who has loved, cared for and felt the importance of giving instructions to his children in the past now feel that 'all was well' in our day? Therefore, we need no more instructions, scriptures or prophets as God has so wisely provided in the past Biblical time period.
The God in the Bible continually sent prophets to give instructions, stop contention and teach correct principles so that all would come to a "unity of the faith". (Ephesians 4:13)
There was not a unity of the faith in the Saviors time and there is not a unity of the faith in our time either. 
<< Church Denomination Chart (A simplified chart by an unknown author.)
<< The Apostle Paul stated that there should be; "...one faith..." (Ephesians 4:5)
The Christian world and/or Christian Churches today obviously do not have a unity of the faith.
Note: For Additional Information See; The Falling Away from the Pure Gospel of Jesus Christ
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"I am the God of Abraham, and the God of Isaac, and the God of Jacob? God is not the God of the dead, but of the living." (Matthew 22:32)
The God of the Bible can see, hear and speak. His mouth is not taped. He can answer our prayers. He also can and has provide for us additional scripture today.
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The Book of Mormon has 239 Chapters in it. Out of those 239 chapters, 233 chapters have some reference to the Savior Jesus Christ and/or his teachings.
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The ancient Nephite Book of Mormon people who lived in the Western Hemisphere recorded the following:
"And we talk of Christ, we rejoice in Christ, we preach of Christ, we prophesy of Christ, and we write according to our prophecies, that our children may know to what source they may look for a remission of their sins." (2 Nephi 25:26) 559-545 BC Western Hemisphere
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What is the Book of Mormon?
The Book of Mormon, like the Bible, is a collection of sacred writings by ancient prophets. The difference is that the prophets in the Book of Mormon lived upon the American continent. God commanded these prophets to keep a record of their teachings, prophecies, missionary labors, and wars so that we could "know concerning the doings of the Lord in other lands, among people of old". (1 Nephi 19:22)
The Lord told the Prophet Joseph Smith that the Book of Mormon contained the “record of a fallen people”. (Doctrine and Covenants 20:9)
Those records were preserved by various Western Hemisphere prophets. One of those prophets was a prophet named Mormon. He was commanded by God to compile the records written by many different pre-425 AD prophets into one set of plates that had the appearance of gold. This condensed record was translated into English and is what we now call The Book of Mormon.
The American Indian, Aztecs, Mayas, and Incas are the descendants of the fallen Book of Mormon people.
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<< Elder Jeffery R. Holland, of the Quorum of the twelve Apostles of the Church of Jesus Christ of Latter-day Saints.
Elder Jeffery R. Holland explains the background and importance of the Book of Mormon.
An Introduction to the Book of Mormon - (2:42 min.)
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"In the more than 6,000 verses, the Book of Mormon refers to Jesus Christ almost 4,000 times and by 100 different names: "Immanuel" "Holy Messiah," "Lamb of God," "Redeemer of Israel," and so on."
“The crowning event recorded in the Book of Mormon is the personal ministry of the Lord Jesus Christ among the Nephites [in the Western Hemisphere, in 34 AD] soon after his resurrection. It puts forth the doctrines of the gospel, outlines the plan of salvation, and tells men what they must do to gain peace in this life and eternal salvation in the life to come." (Book of Mormon, Overview)
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Additional Information:
Missing Scriptures