Mormon Church leader Joseph Smith did see the sword of Laban in the Hill Cumorah and it was one of the relics given to him with the golden plates.
The fulness of the everlasting gospel is contained in the Bible because the Book of Mormon says so.
Intelligences are eternal entities from which all living things are created. Intelligences cannot be created, they have always existed.
The north countries spoken of in the Mormon Doctrine and Covenants is currently unknown, as is most information concerning the lost tribes of Israel. Some obscure scriptures will only be understood as they are fulfilled.
The prophet and Book of Mormon author Nephi states that he was “exceedingly young” when the story of the Book of Mormon begins. Though young, Nephi was old enough to lead his brothers to do what God had commanded them.
If the Lord reveals to youi that the Book of Mormon is the word of God and contains the fullness of the gospel, then the Mormon doctrine that is contained in the Book of Mormon, must also be true.