First Nephi 3:17-20
What would have happened to the Brass Plates if Nephi hadn't taken them? If Jerusalem was going to be destroyed, would the Brass Plates have suffered the same fate? Could they have been lost to the world forever? These plates are priceless. Thankfully they were preserved through Nephi's faith and obedience. Although we only know a part of what was written on them today, they were a blessing to generations of people among the Nephites and Lamanites. Jacob 5 (the allegory of the olive tree) is a good example of the scriptures the brass plates have blessed us with. One day we will have them in their entirety, right alongside our other scriptures.