The division between the Disciples and the Churches of Christ is a single hermeneutical disagreement worked out over sixty years. The American Christian Missionary Society, founded in 1849, was the first flashpoint: the New Testament shows congregations sending missionaries, so was an interdenominational society an unauthorised human institution or a permissible arrangement? The organ, introduced at Midway, Kentucky, in the 1860s, was the second and more emotive. David Lipscomb's Gospel Advocate argued the strict case from Nashville; the Christian Standard argued the permissive one from Cincinnati. Sectional feeling after the Civil War hardened both. In 1906 the United States religious census listed the two bodies separately, which is the conventional date of the split, and neither has ever formally excommunicated the other.