Overview

Between the Great Awakening of the 1730s and the end of the Civil War in 1865, Christianity became increasingly widespread among enslaved African Americans and reshaped the religious history of the United States. This transformation did not occur simply through the slow, tightly supervised catechesis of the earlier colonial period. It developed through evangelical revival, the emergence of Black preachers who worked both inside and outside boundaries imposed by enslavers, and forms of secret, self-directed worship that historians have described as the invisible institution.

The religion that emerged from slavery was neither identical to the Christianity enslavers often hoped to instill nor a simple survival of African religious traditions. Enslaved people interpreted, adapted, rejected, combined, and transformed religious ideas under conditions of coercion. Some embraced evangelical Christianity; others preserved African-derived traditions or maintained Islamic identities and practices. These varied religious experiences became important foundations for the independent Black churches and denominations that expanded dramatically after emancipation.

The Great Awakenings and Evangelical Appeal

The First Great Awakening, which spread through the British colonies beginning in the 1730s, and the Second Great Awakening, which reached much of the American South and West from the late eighteenth century through the early nineteenth century, transformed the religious landscape in ways that reached enslaved communities more effectively than earlier Anglican missionary efforts had. Revival preaching was emotionally engaged, participatory, and centered on individual conversion. Methodist and Baptist preachers held revivals and camp meetings that sometimes brought poor white, enslaved Black, and free Black worshippers into the same religious spaces, crossing customary racial boundaries in worship while leaving the larger structure of slavery intact.

Evangelical preaching emphasized that all people stood as sinners before God and could receive salvation through conversion. That message of spiritual equality existed in deep tension with the racial hierarchy of a slave society. Enslaved converts could understand the claim that all people stood equally before God in ways that extended beyond the intentions of white preachers. Evangelical Christianity also emphasized personal religious experience, testimony, preaching, and communal participation, making it more accessible to people who were widely denied formal education and literacy.

Growth was neither steady nor uncontested. Some early Baptist and Methodist communities included antislavery voices, but Southern evangelical institutions increasingly accommodated and defended slavery. In 1844, conflict over slaveholding contributed to the formation of the Methodist Episcopal Church, South. In 1845, Southern Baptists organized the Southern Baptist Convention after disputes involving slavery and missionary appointments. By the mid-nineteenth century, Baptists and Methodists had become the dominant Protestant affiliations among enslaved African American Christians in much of the South.

Black Preachers and Early Independent Congregations

The revival era produced an important generation of Black preachers, some enslaved and some free, who preached to mixed and all-Black congregations across the South. George Liele, a formerly enslaved man who became a Baptist preacher in Georgia during the 1770s, helped organize one of the earliest Black Baptist communities in Savannah before relocating to Jamaica, where he established Baptist work among enslaved people there.

Andrew Bryan, who was converted through Liele's ministry, became a central leader of the Savannah congregation and was ordained in 1788. Under Bryan and other Black Baptist leaders, the congregation that became First African Baptist Church developed into one of the oldest continuing Black congregations in the United States. Bryan endured arrest, physical punishment, and official suspicion because independent Black religious meetings were frequently regarded by white authorities as potential threats to the slave order.

Black-led congregations and itinerant Black preachers occupied an uncertain position. Some worked with the toleration or support of white ministers and enslavers, while others were harassed, restricted, or shut down. White fear intensified after suspected or actual slave revolts. The alleged Denmark Vesey conspiracy in Charleston in 1822, for example, contributed to greater restrictions on independent Black religious institutions, and Nat Turner's rebellion in Virginia in 1831 led Southern states and local authorities to impose or tighten restrictions on Black preaching, education, literacy, and assembly.

Enslavers' Version of Christianity

Where enslavers permitted or actively sponsored religious instruction for the people they held in bondage, the content of that instruction could be shaped to reinforce the existing social order. White-appointed or white-approved ministers often emphasized obedience, patience, and the duties of servants to masters, drawing selectively on passages from the New Testament epistles while minimizing themes that could be interpreted as challenges to slavery.

Formerly enslaved people who later recorded memories of plantation preaching frequently described sermons that focused narrowly on obedience, honesty, labor discipline, and submission. Such preaching presented Christianity as compatible with slavery and attempted to place religious authority behind the master's control.

Enslaved worshippers did not necessarily accept this interpretation. Attendance at white-supervised services could be required or strongly encouraged, and Black congregants were often segregated in balconies, galleries, rear seating areas, or separate services. Depending on denomination and locality, they could also be denied equal membership rights, leadership authority, burial privileges, or other forms of congregational equality even when they were nominally members of the same church as white worshippers.

The Invisible Institution

Dissatisfaction with supervised religious instruction, together with the desire for greater spiritual autonomy, encouraged enslaved Christians to organize worship outside white-controlled churches. Historians, following sociologist E. Franklin Frazier, have often described these self-directed religious networks as the invisible institution.

Enslaved people gathered in cabins, wooded areas, ravines, and other secluded locations for prayer, preaching, singing, testimony, and communal worship. Later accounts sometimes refer to such spaces as hush harbors or brush arbors. Meetings could be led by enslaved preachers and exhorters whose authority came from their communities rather than from formal denominational licensing.

These gatherings could be dangerous. Slave codes and local regulations in many Southern jurisdictions restricted or prohibited unsupervised meetings of enslaved people because white authorities feared escape plots, rebellion, or independent organization. Formerly enslaved people later recalled practices intended to reduce the chance of discovery, including posting lookouts and attempting to muffle sound. Accounts of inverted pots or vessels being used to "catch" sound belong to this body of remembered clandestine worship, although such practices should not be understood as universal.

Within these gatherings, enslaved Christians could develop interpretations of scripture that differed sharply from those emphasized by proslavery ministers. The Exodus narrative of Israelite bondage and deliverance became especially important, along with biblical themes of divine justice, judgment, freedom, suffering, and hope. Worship also incorporated participatory forms such as call-and-response preaching, rhythmic singing, clapping, testimony, and the ring shout, an embodied religious practice with important connections to West and Central African performance traditions.

Spirituals and Oral Theology

Because literacy was restricted or inaccessible to many enslaved people, religious reflection was often transmitted through preaching, storytelling, testimony, memory, and song rather than through written theological texts. Spirituals, the body of religious folk song developed within enslaved African American communities, became one of the most important forms of this oral religious culture.

Songs such as "Go Down, Moses," "Steal Away to Jesus," and "Wade in the Water" drew on biblical images of bondage, deliverance, pilgrimage, judgment, and salvation. Their meanings could be layered. They functioned as worship and biblical interpretation, could express social protest and hope for freedom, and in some documented circumstances songs were used as forms of coded communication. Historians, however, debate how systematically particular spirituals functioned as Underground Railroad codes, and later traditions about individual songs should not automatically be treated as direct evidence of universal antebellum practice.

Scholars have therefore interpreted spirituals as a form of oral theology through which enslaved communities engaged biblical stories without depending on written theological institutions. Through song, communities could preserve religious teaching, reinterpret scripture, remember suffering, affirm collective identity, and imagine divine deliverance.

African and Islamic Religious Continuities

Christianity became increasingly influential among enslaved African Americans, but it did not eliminate other religious traditions. African-derived beliefs and practices continued to shape healing, burial, music, ritual, understandings of spiritual power, and communal life. These traditions varied substantially by region, ethnic origin, generation, and the degree to which African-born people remained concentrated within particular communities.

Islam also survived among some enslaved Africans brought to North America from Muslim regions of West Africa. Literate Muslim captives sometimes preserved Arabic writing, prayer practices, Qur'anic knowledge, dietary customs, or other elements of Islamic identity despite the pressures of enslavement and forced cultural adaptation.

Omar ibn Said, an educated Muslim man from West Africa enslaved in the United States in the early nineteenth century, left an Arabic autobiography and other writings that provide unusually direct evidence of Islamic learning under American slavery. Bilali Muhammad, enslaved on Sapelo Island in Georgia, also left an Arabic manuscript associated with Islamic religious knowledge. Their experiences demonstrate that religion under slavery cannot be reduced to Christianity alone.

African-derived traditions, Islam, and Christianity could coexist, overlap, or change over time. The religious history of slavery was therefore plural, even as evangelical Christianity became increasingly prominent within enslaved communities during the late eighteenth and nineteenth centuries.

Variation Across Region and Experience

The character of religion under slavery was not uniform across the antebellum South. Access to religious instruction, the policies of individual enslavers, the presence or absence of nearby Black or biracial congregations, local law, migration patterns, and regional demographics all shaped religious experience.

In parts of the Lowcountry of South Carolina and Georgia, where large plantations and substantial concentrations of African-born or African-descended people encouraged stronger cultural continuity, African religious elements remained particularly visible. In portions of the Upper South, enslaved Christians often had greater access to Baptist and Methodist church structures, including nominal membership in predominantly white congregations, though usually under segregated and unequal conditions.

Religious experience also differed by gender, age, status, occupation, and location. Enslaved women often played central roles in transmitting prayers, songs, biblical narratives, ritual practices, and moral instruction within families and quarters. Their influence was frequently exercised outside formal offices that churches recognized, making their religious leadership less visible in institutional records than that of male preachers.

Legacy

By the eve of the Civil War, enslaved African Americans had developed diverse religious traditions that included evangelical Christianity, African-derived religious practices, Islamic continuities, and combinations shaped by local experience. Within Black Christianity, recurring themes of deliverance, divine justice, communal endurance, and spiritual equality provided an alternative to proslavery interpretations of scripture.

Enslaved communities also developed influential forms of preaching, music, testimony, embodied worship, and religious organization. These traditions supplied theological language, musical repertoires, social networks, and experienced leaders who would contribute to the dramatic expansion of independent African American churches after emancipation.

The invisible institution did not simply transform into the postwar Black church, because independent Black congregations and denominations already existed before the Civil War. Rather, religious communities developed under slavery became one important foundation of the postwar expansion of African American churches, alongside antebellum free Black congregations, independent Baptist churches, and established denominations such as the African Methodist Episcopal Church and African Methodist Episcopal Zion Church.

Emancipation allowed many religious communities that had operated under white supervision or in clandestine settings to organize publicly, acquire property, establish schools, call their own ministers, and join independent denominational networks. The religious culture formed under slavery therefore became a major component of the institutional world Black Americans built in freedom.

Selected Sources