J.N. Darby and the Roots of Dispensationalism describes the work of one of the most important and under-studied theologians in the history of Christianity. In the late 1820s, John Nelson Darby abandoned his career as a priest in the Church of Ireland to become one of the principal leaders of a small but rapidly growing religious movement that became known as the "Plymouth Brethren." Darby and other brethren modified the Calvinism that was common among...