In the Book of Mormon, a brass ball with two pointers that gave directions—as a compass—and also spiritual instruction to Lehi and his followers when they were righteous. The Lord provided the Liahona and gave instructions through it.

Lehi found a brass ball with two spindles that pointed the way that Lehi and his family should go, 1 Ne. 16: 10. The ball worked according to faith and diligence, 1 Ne. 16: 28-29 (Alma 37: 40). Benjamin gave the ball to Mosiah, Mosiah 1: 16. The ball or director was called the Liahona, Alma 37: 38. The Liahona was compared to the word of Christ, Alma 37: 43-45. The Three Witnesses of the Book of Mormon are to see the director given to Lehi, D&C 17: 1.