Christianity and the history of slavery

Using biblical interpretation to justify slavery

Slavery was a widespread institution in the ancient Mediterranean world. Some biblical passages describe, regulate or assume forms of servitude, while other passages have been read as challenging the treatment of human beings as property. Christian writers and institutions have therefore reached different conclusions across time.

The so-called “curse of Canaan”

Genesis 9:25–27 was used by some later interpreters to claim that Canaan's descendants were destined for servitude. Over time, this interpretation was incorrectly connected with African ancestry and dark skin. That association was not a sound reading of the text, but it became part of a broader religious and racial ideology used to defend the enslavement of Africans.

Modern historical scholarship distinguishes the biblical narrative from the later racial theories built around it. A text's presence in scripture does not by itself establish a moral justification for a later institution, especially when the interpretation depends on assumptions absent from the passage.

Slavery in biblical and early Christian settings

Several legal and household passages in the Hebrew Scriptures discuss slavery and servitude within the social systems of their period. The Christian Scriptures also mention enslaved people and household relationships, generally without presenting a sustained political program for abolition. These references were later used both by defenders of slavery and by critics who argued that the principle of human equality should lead to emancipation.

The early Christian movement included enslaved and free people. Some Christian teachers emphasized shared spiritual standing, while other institutions accepted existing social arrangements. The historical record is therefore mixed: Christian communities sometimes offered protection or freedom, and at other times accommodated or defended slavery.

Gregory of Nyssa and moral criticism

Gregory of Nyssa, a fourth-century bishop and theologian, criticized the idea that one human being could own another. His argument centered on the belief that all people bear God's image and that human dignity cannot be converted into a saleable possession. This became one important strand in later Christian opposition to slavery, even though it did not end the institution in the wider Christian world.

How interpretations changed

From late antiquity through the medieval and early modern periods, Christian legal and theological traditions developed competing approaches to slavery. Some writers defended bondage as an established social practice; others condemned abuses, encouraged manumission or argued that freedom was more consistent with human creation and Christian ethics. During the Atlantic slave trade, religious arguments were again mobilized on both sides.

The history shows why it is important to distinguish a religion's texts, the interpretations of particular communities, and the actions of political and economic institutions. No single historical claim represents all Christians or all Christian traditions.

Related reading

• Passages about slavery in the Bible
• Christian acceptance of slavery from the fifth to seventeenth century
• The Pentateuch and its historical setting
• Ideas about the transfer of sin

Selected references

1. Historical studies of slavery, biblical interpretation and Christian ethics.
2. Research on the development of racialized readings of Genesis.
3. Primary writings attributed to Gregory of Nyssa concerning human freedom and dignity.