Smith's early revelations and writings frequently referred to the Father and the Son being one, but after May 1833, he never again referred to God the Father and Jesus as being one. In 1835, the Lectures on Faith were published as part of the Doctrine and Covenants, teaching a form of Binitarianism where the Father is a "personage of the spirit" and the Son is a "personage of tabernacle" looking exactly the same in appearance, with the Holy Ghost being the shared mind between them. Joseph Smith's later accounts of the First Vision reflects the theology of the Lectures on Faith, for example, the 1835 account notes that "a personage appeared in the midst of this pillar of flame, ... Another personage soon appeared, like unto the first." By the 1840s Smith was teaching a form of social trinitarianism—that members of the Godhead were separate and distinct individuals united in purpose.