The Sacred Grove's historical significance is as the location of Smith's First Vision. In the early 19th century, the western New York area had "caught fire" so many times with intense revivalism that it later became known as the burned-over district. As an early adolescent, the revivalism both interested and confused Smith, and he became concerned "for the wellfare of my immortal Soul," which led him to study the scriptures. Believing that "there was no society or denomination that built upon the gospel of Jesus Christ as recorded in the New Testament", and not knowing where to turn for forgiveness of his sins, he went to the woods near his home to pray. While praying, Smith said he saw a "pillar of light", and then "his mind was caught away" into a vision where two personages, identified as God the Father and Jesus Christ, told him his sins were forgiven and that all churches were false and corrupt. This story has become a foundational element for the LDS Church and other organizations in the Latter Day Saint movement. Adherents believe this vision started Smith on a path toward him becoming a prophet, translating the Book of Mormon from golden plates, and re-establishing the Church of Christ.
The Sacred Grove is also suggested as a possible site where Smith showed the golden plates to Eight Witnesses in June 1829. Smith's mother, Lucy Mack Smith, said the event took place at a location near the Smith log home "where the family were in the habit of offering up their secret devotions to God". Followers believe the plates had been taken there by the Angel Moroni, who had buried them there after their abridgement 1,400 years earlier..
Today
The Sacred Grove is often visited as part of the Smith Family Farm, a historical site of the LDS Church, located at 843 Stafford Road. The church operates a welcome center on the farm, which includes a replica of the log home built in 1818 by Smith's father, Joseph, Sr., as well as the original frame home built by the Smiths in 1825. Visitors to the area are able to walk through the grove on a series of interconnecting dirt trails. The majority of the trees within the Sacred Grove are too young to have been present at the time the Smith family lived there. Bob Parrot, a forestry specialist hired by the church to care for the grove, has identified only six trees in the grove that were alive in 1820; these trees are referred to as the "Witness Trees". The Sacred Grove Conservation Program, which was created after the nearby log home was reconstructed, has been implemented to restore the grove to its 1820 size. Other historic sites close to the Smith Farm are the Hill Cumorah and its associated visitors' center, near where Smith said he was given the records that he translated the Book of Mormon from, as well as the E. B. Grandin Printing Shop in Palmyra, where the initial printing of the Book of Mormon took place.