President Spencer W. Kimball has indicated that the taking of the Book of Mormon to the modern Lamanites is in partial fulfillment of 1 Nephi 21:8:
My Lamanite brothers and sisters, we love you. Our bringing the gospel to you is "likened unto their being nourished by the Gentiles and being carried in their arms and upon their shoulders. . . " (1 Nephi 22:8.) Your God has performed many miracles to get the story written by his prophets, to preserve the records against threats of enemies and the ravages of nature, and to get them translated into a language you can understand, and bring to you this second witness of Christ. Your Book of Mormon record is as a voice from the dust, messages from the dead, warnings from the Lord:"Return unto me and I will return unto you, saith the Lord of Hosts." (3 Nephi 24:7.)
Our Lord cries, "Wo unto him that spurneth at the doings of the Lord; yea, wo unto him that shall deny the Christ and his works!" (Ibid., 29:5.)
You have been preserved to this epochal day, and the gospel is available to you now. Wash your souls in the blood of the Lamb. Cleanse your lives, study the scriptures, accept the gospel and ordinances.
These predictions can be fulfilled and come to you through one channel only, the path of righteousness and faith; else all these promises are but empty, unfulfilled dreams.
May God bless you that you may accept the truths now revealed to you. (Conference Report, October 1959, pp. 61-62.)