There is a reason why one man is born black and with other disadvantages, while another is born white with great advantages. The reason is that we once had an estate before we came here, and were obedient, more or less, to the laws that were given us there. Those who were faithful in all things there received greater blessings here, and those who were not faithful received less…
There were no neutrals in the war in Heaven. All took sides either with Christ or with Satan. Every man had his agency there, and men receive rewards here based upon their actions there, just as they will receive rewards hereafter for deeds done in the body. The Negro, evidently, is receiving the reward he merits.
—Joseph Fielding Smith, LDS President
Doctrines of Salvation, 1954