slavery throughout the South, some Baptist and Methodist ministers gradually changed their messages to accommodate the institution. After 1830, white Southerners argued for the compatibility of Christianity and slavery, with a multitude of both Old and New Testament citations. They promoted Christianity as encouraging better treatment of slaves and argued for a paternalistic approach. In the 1840s and 1850s, the issue of accepting slavery split the nation's largest religious denominations (the Methodist, Baptist and Presbyterian churches) into separate Northern and Southern organizations; see Methodist Episcopal Church, South, Southern Baptist Convention, and Presbyterian Church in the Confederate States of America). Schisms occurred, such as that between the Wesleyan Methodist Church and the Methodist Episcopal Church. Southern slaves generally attended their masters' white churches, where they often outnumbered the white congregants. They were usually permitted to sit only in the back or in the balcony. They listened to white preachers, who emphasized the obligation of slaves to keep in their place, and acknowledged the slave's identity as both person and property. Preachers taught the master's responsibility and the concept of appropriate paternal treatment, using Christianity to improve conditions for slaves, and to treat them "justly and fairly" (Col. 4:1). This included masters having self-control, not disciplining under anger, not threatening, and ultimately fostering Christianity among their slaves by example. Slaves also created their own religious observances, meeting alone without the supervision of their white masters or ministers. The larger plantations with groups of slaves numbering 20, or more, tended to be centers of nighttime meetings of one or several plantation slave populations. These congregations revolved around a singular preacher, often illiterate with limited knowledge of theology, who was marked by his personal piety and ability to foster a spiritual environment. African Americans developed a theology related to Biblical stories having the most meaning for them, including the hope for deliverance from slavery by their own Exodus. One lasting influence of these secret congregations is the African American spiritual. Slave rebellions According to Herbert Aptheker, "there were few phases of ante-bellum Southern life and history that were not in some way influenced by the fear of, or the actual outbreak of, militant concerted slave action." Historians in the 20th century identified 250 to 311 slave uprisings in U.S. and colonial history. Those after 1776 include: Gabriel's conspiracy (1800) Igbo Landing slave escape and mass suicide (1803) Chatham Manor Rebellion (1805) 1811 German Coast