Joseph Smith, Sr. tells his family about his first vision. He sees a field representing the barrenness of true religion upon the earth, and he sees a log containing a box. His spirit guide tells him that if he eats the contents of the box, he will be filled with "wisdom and understanding". He raises the lid of the box, but is unable to eat its contents because "all manner of beasts, horned cattle, and roaring animals, rose up on every side in the most threatening manner possible". Based on the vision, Smith, Sr. concludes, more than ever, that there is no true religion on the earth. He would have six other visions between 1811 and 1819.
[Wikipedia: Chronology of Mormonism, http://en.wikipedia.org/wiki/Chronology_of_Mormonism]