When Did Joseph Smith Know the Father and the Son Have “Tangible” Bodies?
Brigham Young University Press
"Joseph Smith learned many things in the First Vision, among them the reality and separate nature of God and Jesus Christ. John W. Welch draws on Joseph's written accounts for evidence of this, in particular on Joseph’s correction of Orson Hyde’s teachings on April 2, 1842, as recorded in Joseph’s journal. Welch considers some of Joseph’s experiences that could have led to Joseph’s statement on that day: the First Vision in 1820, the translation of the Book of Mormon in 1829 and the Bible in 1832, and many personal heavenly appearances to Joseph from 1823 to 1836. Welch theorizes that Joseph likely saw, heard, or even felt the embodied realities of God and his angelic messengers on multiple occasions." [Publisher]