1 Ne. 6; D&C 10; refer in this text to Words of Mormon 1:5-7
“He stated that he had been commanded to keep the small plates for ‘a wise purpose’ in the Lord. That purpose would not be fully realized until the year 1828, when Joseph Smith would be involved (with Martin Harris) in the loss of the first 116 manuscript pages of the Book of Mormon, pages translated from the large plates. At that point the Lord commanded Joseph Smith to turn to the small plates and undertake a translation of material which would cover approximately the same time period as that which had been lost.” (R. Millet and J. F. McConkie, Doctrinal Commentary on the Book of Mormon, 1:62)