“If They Be Filthy It Must Needs Be That They Cannot Dwell in the Kingdom of God”

"Both the justice of God and the laws of nature mandate a division of the wicked from the righteous. The warmth and glory of the noonday sun and midnight's shield of darkness are not compatible companions-light and darkness will never meet, Christ and Satan will never shake hands. The separation of the righteous from the wicked in the world to come is foreshadowed by their separation in mortality. This life, like the one to follow, has its children of light and its children of darkness. The citizens of both kingdoms prepare themselves here for the nature of the society of which they will be a part both in and after death." (McConkie and Millet, Doctrinal Commentary on the Book of Mormon, vol. 1, p. 121)