“Those of Israel who follow the Light of Christ in this life will be led eventually to the higher light of the Holy Ghost and will come to know and come unto him. In time they come to know of their noble heritage and of the royal blood that flows through their veins. They come to earth with a predisposition to receive truth, with an inner attraction to the message of the gospel. ‘My sheep hear my voice,’ the Master said, ‘and I know them, and they follow me’ (John 10:27)” (Robert Millet, p. 214)
President Joseph Fielding Smith said: “Every person who embraces the gospel becomes of the house of Israel. In other words, they become members of the chosen lineage, or Abraham’s children through Isaac and Jacob unto whom the promises were made. The great majority of those who become members of the Church are literal descendants of Abraham through Ephraim, son of Joseph. Those who are not literal descendants of Abraham and Israel must become such, and when they are baptized and confirmed they are grafted into the tree and are entitled to all the rights and privileges as heirs” (Doctrines of Salvation, comp. Bruce R. McConkie, 3 vols. [1954-56], 3:246).
Elder Russell M. Nelson has said, “Once we know who we are and the royal lineage of which we are a part, our actions and directions in life will be more appropriate to our inheritance.” (The Power of the Word, p. 214) I think this is why Christ spent so much time talking about the covenant with the Nephites.
Brother Paul K. Browning: “To answer, we need only go back to Abraham’s commission. His “seed”—both his literal posterity and all those who accept the gospel—was charged to bless all the families of the earth with the gospel and the priesthood. In 1834 the Lord emphasized through the Prophet Joseph Smith that the Latter-day Saints “are the children of Israel, and of the seed of Abraham” (D&C 103:17). In 1836 the Prophet Joseph Smith received from the ancient prophet Elias the keys of the dispensation of the gospel of Abraham (see D&C 110:12). Thus, the blessings and responsibilities of the Abrahamic covenant have been restored to us.
“Whatever might have been the shortcomings of ancient Israel, today all Church members have the opportunity to carry out the assignment outlined so long ago. The assignment is inherent with their receiving gospel covenants. Latter-day Saints thus see themselves as performing some of the concluding scenes of an anciently prophesied plan that was put into motion thousands of years ago. As the seed of Abraham, all of us have the responsibility to gather both our kindred and all others who are willing to gather. By offering them a chance to accept the gospel of Jesus Christ, we help them receive the blessings of the Abrahamic covenant and the opportunity of exaltation, and we further prepare ourselves to receive the blessings of eternal life.” (Paul K. Browning, “Gathering Scattered Israel: Then and Now,” Ensign, July 1998, 54)
President Gordon B. Hinckley:
If we will go forward, never losing sight of our goal, speaking ill of no one, living the great principles we know to be true, this cause will roll on in majesty and power to fill the earth. Doors now closed to the preaching of the Gospel will be opened. The Almighty, if necessary, may have to shake the nations to humble them and cause them to listen to the servants of the living God. Whatever is needed will come to pass. (Ensign, November 1997, p. 68)