upright|thumb|Charles Taze Russell, founder of the Watch Tower Society In 1870, Charles Taze Russell and others formed a group in Pittsburgh, Pennsylvania, to study the Bible. During his ministry, Russell disputed many of mainstream Christianity's tenets, including immortality of the soul, hellfire, predestination, Christ's return, the Trinity, and the burning up of the world. In 1876, he met Nelson H. Barbour. Later that year they jointly produced the book Three Worlds, which combined restitutionist views with end time prophecy.
upright|thumb|charles taze russell founder of the watch tower society in 1870 charles taze russell and others formed a group in pittsburgh pennsylvania to study the bible during his ministry russell disputed many of mainstream christianity's tenets including immortality of the soul hellfire predestination christ's return the trinity and the burning up of the world in 1876 he met nelson h barbour later that year they jointly produced the book three worlds which combined restitutionist views with end time prophecy