Nephi also shared with his brothers his important understanding of the purpose of the creation of the earth and the blessings that come from righteousness and obedience. "Behold, the Lord hath created the earth that it should be inhabited." There was a clear purpose behind the creation. The earth was created so that it could be inhabited by the sons and daughters of God. To Moses the Lord said, "And worlds without number have I created; and I also created them for mine own purpose; and by the Son I created them, which is mine Only Begotten" (Moses 1:33). And the Lord explained to Enoch, "And were it possible that man could number the particles of the earth, yea, millions of earths like this, it would not be a beginning to the number of thy creations; and thy curtains are stretched out still" (Moses 7:30).
In the Doctrine and Covenants Joseph Smith and Sidney Rigdon declared: "For we saw him"—meaning Jesus Christ—"even on the right hand of God; and we heard the voice bearing record that he is the Only Begotten of the Father—That by him, and through him, and of him, the worlds are and were created, and the inhabitants thereof are begotten sons and daughters unto God." (Doctrine and Covenants 76:23–24). As a part of their ministry and calling, many prophets have been blessed with this vision of the God’s creations and His purpose in providing it as a place for our life and progression. Nephi understands the importance of this foundational truth for his brothers. He attempts to share this knowledge with them even knowing what he has seen in vision of them and of their likely future.
Book of Mormon Central, "Where Can You Best Learn about God’s Plan of Salvation? (Alma 24:14)," KnoWhy 272 (February 8, 2017).