Bruce R. McConkie
"Life itself depends upon the existence of opposites. Without evil there could be no good; without misery, no happiness; without death, no life. (2 Nephi 2.) Thus, if there are good gifts that come from God there are also evil gifts that spring forth from Satan. Heaven is the source of all that is good; hell, of all that is evil….
"Is there a gift of preaching by the power of the Holy Ghost that enlightens spiritual souls and leads them to eternal life? So also there is a gift of intellectual persuasion, a gift of sophistry and delusion, that pleases carnal men and lets them feel that they can believe what they will and live after the manner of the world, and yet be saved.
"Is there a gift of charity, of enjoying and possessing the pure love of Christ, that leads men to peace in this present world and assures them of eternal life in that world which is to be? So also there is a gift of selfishness, of putting one’s own interests first in all things, of spewing forth hatred and animosity upon others, all of which leads to war and desolation here and now and to everlasting destruction hereafter.
“Are there gifts of purity, of chastity, of clean thoughts, of upright living, all of which cleanse and perfect the souls of men and prepare them to be at ease in the fellowship of angels and holy beings hereafter? So also there are gifts of lust, of lewdness, of profane and evil speaking, of filling one’s mind with carnal and evil thoughts, all of which lead to vulgar and immoral acts that prepare men for the continuing association of evil spirits in the realms ahead.” (A New Witness for the Articles of Faith, pp. 375-77)