One of the basic doctrines of the Mormon church is that the spirit of man existed before the world was created. From this doctrine came the idea of some spirits being more noble than others. The Mormon leaders taught that the "more noble" or choice spirits are born as Mormons. Blacks, on the other hand, were considered to have been more unfaithful in the pre-existence than any of the spirits who were allowed to take bodies. Apostle McConkie maintained that
Mormon historian B.H. Roberts asserted that in the pre-existence the Negroes
Apostle Mark E. Petersen presented the Mormon thinking concerning the doctrine of pre-existence:
Is there reason then why the type of birth we receive in this life is not a reflection of our worthiness or lack of it in the pre-existent life? ... can we account in any other way for the birth of some of the children of God in darkest Africa, or in flood-ridden China, or among the starving hordes of India, while some of the rest of us are born here in the United States? We cannot escape the conclusion that because of performance in our pre-existence some of us are born as Chinese, some as Japanese, some as Latter-day Saints. These are rewards and punishments, fully in harmony with His established policy in dealing with sinners and saints, rewarding all according to their deeds....
Let us consider the great mercy of God for a moment. A Chinese, born in China with a dark skin, and with all the handicaps of that race seems to have little opportunity. But think of the mercy of God to Chinese people who are willing to accept the gospel. In spite of whatever they might have done in the pre-existence to justify being born over there as Chinamen, if they now, in this life, accept the gospel and live it the rest of their lives they can have the Priesthood, go to the temple and receive endowments and sealings, and that means they can have exaltation. Isn't the mercy of God marvelous?
"Think of the Negro, cursed as to the priesthood.... This Negro, who, in the pre-existence lived the type of life which justified the Lord in sending him to the earth in the lineage of Cain with a black skin, and possibly being born in darkest Africa--if that Negro is willing when he hears the gospel to accept it, he may have many of the blessings of the gospel. In spite of all he did in the pre-existent life, the Lord is willing, if the Negro accepts the gospel with real, sincere faith, and is really converted, to give him the blessings of baptism and the gift of the Holy Ghost. If that Negro is faithful all his days, he can and will enter the celestial kingdom. He will go there as a servant, but he will get celestial glory
(Race Problems--As They Affect The Church, Address by Mark E. Petersen at the Convention of Teachers of Religion on the College Level, delivered at Brigham Young University, Provo, Utah, August 27, 1954).