There Is An Established Pattern
The highly esteemed prophet of the Lord Moses, gathered together, and compiled from all the holy writings, the records from the beginning of the prophets to his time. Then, from the time of Abraham to the Jews, all of what we received, is as the writings from Moses, to the time of Christ. These are what is known as The Old Testament.
The Apostles then compiled their accounts of the Savior, forming the New Testament. These were then combined with the prophets of old, which now form the Holy Bible.
Mormon and Moroni, compiled the approximately 1000 year period of sacred records, which came from a branch of Israel, led out from Jerusalem to the Americas, before King Zedekiah of the kingdom of Judah, was conquered by King Nebuchadnezzar of Babylon.
These people were known as the Nephites and Lamanites. Along with these records, were those found by these Nephites, of a people who came out from Babylon, at the time the Lord confounded the languages of the people, taking away from them the universal language given to Adam. All these abridged records make up The Book of Mormon, Another Testament of Jesus Christ.
Third, the Lord, through His prophet Joseph Smith, revealed His word through scripture, in the organization and running of His church, once again established. This book of scripture is called The Doctrine and Covenants.
We also have The Pearl of Great Price. This scripture contains, among other things, inspired and edited portions of selections from The Book of Genesis.
Another portion contains The Book of Abraham, an inspired translation of writings from Abraham, which Joseph Smith began the translation of in 1835, after obtaining some Egyptian papyri in New York, written by Abraham himself.
Also, Joseph Smith—Matthew, an extract from the testimony of Matthew in the New Testament, in Joseph Smith’s translation of the Bible. And also Joseph Smith—History, excerpts from Joseph Smith’s official testimony and history, which he and his scribes prepared in 1838–39.
Finally, The Articles of Faith, of The Church of Jesus Christ of Latter-day Saints. A statement by Joseph Smith about some core doctrines of the Lord’s true church.