“The Spirit Speaketh the Truth”

Joseph F. McConkie, Robert L. Millet
The Holy Ghost is “the Spirit of truth” (John 14:17), the means by which the Saints come to know the truth of all things (Moroni 10:5). He is the Comforter, has all knowledge (D&C 42:17), and is the Spirit of Truth whom the world cannot receive (John 14:16-17).

Doctrinal Commentary on the Book of Mormon, Vol. 2