D&C 1:4

And the voice of warning shall be unto all people, by the mouths of my disciples, whom I have chosen in these last days. D&C 1:4

In the first verses of the Lord’s preface to the doctrines, covenants, and commandments given in this dispensation, the Lord sounds the voice of warning to all people. His revelations will sound in every ear, proclaiming the new and everlasting covenant, admonishing each one to exercise faith, repent, and come unto Christ and his true and living Church (D&C 1:30) The Lord’s authorized servants who are endowed with priesthood keys and sacred stewardships are known to the Church. They do not operate in the dark; they do not hide in the shadows. Fearlessly, these “weak things of the world,” the Lord’s anointed prophets, proclaim the truth of the gospel (D&C 1:19); boldly they declare the Lord’s message of salvation (D&C 1:32); humbly they go forth with confidence in the commands of the Lord who watches over all (D&C 1:5). The Lord's warning voice will go throughout the world in preparation for his glorious second coming. (Robert L. Millet and Lloyd D. Newell. Draw Near Unto Me: Daily Reflections on the Doctrine and Covenants. 4)