“That Ye May Not Be Deceived Seek Ye Earnestly the Best Gifts”
7 But ye are commanded in all things to ask of God, who giveth liberally; and that which the Spirit testifies unto you even so I would that ye should do in all holiness of heart, walking uprightly before me, considering the end of your salvation, doing all things with prayer and thanksgiving, that ye may not be seduced by evil spirits, or doctrines of devils, or the commandments of men; for some are of men, and others of devils.
8 Wherefore, beware lest ye are deceived; and that ye may not be deceived seek ye earnestly the best gifts, always remembering for what they are given . . .
President Joseph Fielding Smith wrote:
“From the time of the fall of man until now Satan and his followers who were cast out of heaven, have been deceiving men. Today, as in the beginning, Lucifer is saying, ‘I am also a son of God . . . Believe . . . not [the true gospel]’ [Moses 5:13], and men today believe not [the true gospel] for the same reason that they refused to believe in the beginning. ‘Some [commandments] are of men,’ so the Savior informed Joseph Smith in the Great Vision [D&C 46:7]. Some commandments are of devils, and these [are] also made manifest largely through the activities of men.”
(Church History and Modern Revelation, 2 vols. , 1:200.)