Branham first spoke about original sin in 1958; he rejected the orthodox view of the subject and hinted at his own belief in a hidden meaning to the story. In later years, he made his opinion concerning the sexual nature of the fall explicitly known. Weaver wrote that Branham may have become acquainted with serpent's seed doctrine through his Baptist roots; Daniel Parker, an American Baptist minister from Kentucky, promulgated a similar doctrine in the mid-1800s. According to Pearry Green, Branham's teaching on the serpent's seed doctrine was viewed by the broader Pentecostal movement as the "filthy doctrine ... that ruined his ministry". No other mainstream Christian group held a similar view; Branham was widely criticized for spreading the doctrine. His followers view the doctrine as one of his greatest revelations.