Elder Bruce R. McConkie in a message to institute and seminary people on this campus several years ago used this physical illustration to distinguish between the Spirit of Jesus Christ and the Holy Ghost. It was very instructive and impressive to me. He said, “The Spirit of the Holy Ghost could be compared to a radio transmitter; you and I, to the radio receivers. The radio waves would be the Spirit of Jesus Christ.” This physical symbol illustrates the difference. The Holy Ghost is a member of the Godhead who performs very specific functions on this earth—to sanctify, to guide, to witness, to testify of the Father and Son and things pertaining to their kingdom, and to confirm the promise of the Father when you and I enter into a covenant relationship in the waters of baptism. When we renew our covenants in other ordinances the Holy Ghost confirms the promise of the Father to us, his covenant children, that if we will live true we will have peace in this world and eternal life in the world to come. The Holy Ghost then would give us guidance, personal revelation, and personal commandments regarding the affairs of our lives. President McKay taught that to all members of the Church who are in the line of their duty the Holy Ghost normally speaks through their consciences. The Lord may choose many ways to speak, but it seems that the still, small voice, the enlightened conscience, or heart within a person would be the natural one for him to choose. However, it may require some other way to reach a man who is perhaps beyond the experience or the words of Christ which have been deposited within that conscience, or it may require the imposition of keys, priesthood powers, or certain other special blessings. The choice would lie in the Lord’s hands according to his purposes. But for most of us most of the time the Holy Ghost will speak through our consciences. The Spirit of Jesus Christ is the medium through which the Holy Ghost, this member of the Godhead, performs his unique and special functions (see Moroni 10)…
President Lee spoke to a group of missionaries in England, and in answer to the question “What is the most important of all the commandments?” said, “The most important commandment is the one you’re having the greatest difficulty living.” You can see why. If a person would be true to the whispering of that still, small voice regarding some of those matters that you and I just heard, other things would happen. Many people who want to have answers to big decisions or intellectual dilemmas in their minds, but who are not really open and receptive to the whisperings of the Spirit in their hearts, will continue to remain confused in their minds. The principle is this: If you’re confused about a matter, be true to that which you know is right, and in the Lord’s time and according to his purposes you will be given enlightenment and understanding regarding the matter you were confused about. It may be a big decision or it may be an intellectual problem that you have on your mind.
Stephen R. Covey, BYU Devotional, May 1975 (emphasis added)