Slavery in the Bible: What It Actually Was — and the People Who Ended It

Does the Bible endorse slavery? For a lot of people — believers and skeptics alike — that question is a real obstacle to taking the rest of the book seriously. It deserves a straight answer.

The answer comes in two parts. First, the word "slavery" hides a great deal: the arrangements the Bible describes were, in most cases, nothing like the race-based chattel slavery of the Atlantic and Barbary trades. Second, and less often heard, the same Scriptures so often blamed for slavery are the ones that seeded its end. The campaign that abolished the British slave trade was led by people who said, in as many words, that the Bible required it.

Here is the text, the hard parts included, and the history a lot of us skipped.

A problem of translation

When we read "slave," we picture the Atlantic trade: people seized by race, owned for life, treated as property, their children born into the same fate. That was one especially brutal form of slavery, and it was evil. But the English word flattens several very different arrangements. The Hebrew ebed and the Greek doulos can mean a household servant, a laborer working off a debt, or a prisoner of war. Reading the modern picture into every ancient mention is where the confusion starts.

So the real question isn't whether the Bible mentions slavery. It does. Nearly every society on earth practiced it for most of recorded history. The question is what the text actually permits, forbids, and pushes toward.

What the Old Testament law does

Read closely, the law of Moses does not read like an endorsement of chattel slavery. In several places it reads like a brake on it.

Servitude among Israelites was debt-bondage with a time limit. A Hebrew servant went free in the seventh year, and he did not leave empty-handed:

"If your brother, a Hebrew man or a Hebrew woman, is sold to you, he shall serve you six years, and in the seventh year you shall let him go free from you. And when you let him go free from you, you shall not let him go empty-handed. You shall furnish him liberally out of your flock, out of your threshing floor, and out of your winepress." (Deuteronomy 15:12–14, ESV)

That is closer to indentured labor with severance pay than to slavery as we imagine it.

Kidnapping a person to sell them was a capital crime — which outlaws the whole engine of the slave trades that came later:

"Whoever steals a man and sells him, and anyone found in possession of him, shall be put to death." (Exodus 21:16, ESV)

The Atlantic and Barbary trades ran on stolen people. Under this law, the traders would have faced execution.

An escaped slave was to be sheltered, not handed back. That is the reverse of the fugitive-slave laws that later propped up American slavery:

"You shall not give up to his master a slave who has escaped from his master to you. He shall dwell with you, in your midst, in the place that he shall choose within one of your towns, wherever it suits him. You shall not wrong him." (Deuteronomy 23:15–16, ESV)

A society that lets slaves go free and refuses to return them is not built to hold people forever.

The Sabbath rest covered servants too (Exodus 20:10), and a servant maimed by his owner went free (Exodus 21:26–27). The pattern is a society regulating an institution it inherited, and leaning against it.

The hard passage

Honesty means naming the text critics raise. Leviticus 25:44–46 lets Israelites buy foreign slaves and leave them to their children as property. It is the hardest passage in this discussion, and it is not abolitionist. Smoothing it over would be a cheat.

Two things sit together here. Even these servants fell under the other laws — the ban on kidnapping, the injury rules, the Sabbath — and were folded into the community rather than treated as less than human. And the direction of the whole story runs against slavery. The law meets a world where slavery is everywhere and starts to fence it in; the New Testament then plants ideas that make it, in time, impossible to keep.

How to read an ancient law

Some of the difficulty comes from reading ancient law the way we read a modern statute — as a list of a society's ideals. The law of Moses often does something else. It meets a world as it is and limits it, without approving what it limits. Jesus said as much about divorce: Moses allowed it "because of your hardness of heart," though "from the beginning it was not so" (Matthew 19:8, ESV). A permission is not an endorsement.

Laws that cap how long a person can be held, that protect the injured and the runaway, and that put kidnappers to death are not how a slave society digs in. They are how a society gets pushed, slowly, the other way.

The world the New Testament entered

To read the New Testament fairly, picture the world it was written into. Roman slavery was everywhere — perhaps a fifth of the empire, closer to a third in Italy — but it was not built on race, and it was not always for life. Slaves could be teachers, doctors, or clerks. Owners freed them often enough that freed slaves and their descendants were a normal part of society. For many others it was savage: the mines and the arena used people up. This was the setting the first Christians lived in, with no power to pass laws and every reason to expect trouble.

They had no way to abolish anything. What they had was a handful of claims that, taken to their conclusion, pull slavery apart from the inside.

"There is neither Jew nor Greek, there is neither slave nor free, there is no male and female, for you are all one in Christ Jesus." (Galatians 3:28, ESV)

Paul tells enslaved believers to take their freedom if they can get it (1 Corinthians 7:21). He lists slave-traders — the Greek andrapodistai, the kidnappers who sell people — among the ungodly, alongside murderers and liars (1 Timothy 1:10). And he sends a runaway slave back to his owner with a line that quietly takes the whole arrangement apart:

"...no longer as a bondservant but more than a bondservant, as a beloved brother..." (Philemon 16, ESV)

Once a slave is your brother, and your equal before God, owning him stops making sense. The church took far too long to act on that. But when abolition finally came, this was the ground it stood on.

A history that gets left out

There is a second reason the usual story misleads. It treats slavery as a Western sin and a racial one. It was neither, only.

Slavery ran on every continent and in every direction. From about 1500 to 1750, corsairs from the Muslim states of the Barbary Coast — Algiers, Tunis, and Tripoli, along with Salé in independent Morocco — raided Christian Europe and carried people off. The historian Robert Davis has put the number at 1 to 1.25 million, a figure other scholars consider too high. The Ottoman devshirme took Christian boys from the Balkans, likely a hundred thousand or more over its long life. The trans-Saharan and Indian Ocean trades ran for over a thousand years, and in those African-facing systems male captives were often castrated to serve as eunuchs — a mutilation many did not survive.

The two Atlantic-era systems were built differently. Barbary slaving turned partly on ransom: Christian orders such as the Trinitarians existed to buy captives back, while those no one paid for faced the oars of the galleys and pressure to convert under threat. Atlantic slavery was race-based, lifelong, and inherited, with no ransom and no release, so that children were born into it. Pointing out the difference softens neither, and blames no one's faith; both were atrocities. It only shows slavery for what it was: a near-universal human institution, not a uniquely Western or uniquely racial one.

None of that excuses the Atlantic trade, which was a monstrous evil that Western nations built and grew rich on. The point is narrower. Slavery was everywhere — so the question worth asking is the one the usual story skips. If it was everywhere, who decided it had to end, and why?

The people who ended it

Abolition was not history's default that the West finally caught up to. It was an unlikely, expensive campaign, and its leaders said plainly that Christian conviction drove them.

It was also a movement, not two famous men. Quakers had protested slavery since the seventeenth century, and the parliamentary fight in Britain was run largely by a circle of evangelicals later nicknamed the Clapham Sect, who treated abolition as a demand of their faith. Two men, though, gave the story a face.

John Newton captained a slave ship. A violent storm in 1748 began a slow conversion — slow because he kept trading for years afterward, leaving the sea only when a stroke forced him off it in 1754. He became a clergyman, and in the early 1770s he wrote a hymn about being pulled out of a life he called wretched: Amazing Grace. In 1788 he published a blunt account of the trade's cruelty, and he lent his testimony to a young member of Parliament.

That member was William Wilberforce. In his diary in 1787 he wrote that God had set two objects before him, "the suppression of the Slave Trade and the reformation of manners." He lost the vote year after year for two decades before the Slave Trade Act of 1807, then kept going until the Slavery Abolition Act of 1833. He died on 29 July 1833, three days after hearing the bill was sure to pass, and did not live to see it become law a month later.

What Britain did next was almost unheard of, and it was not clean. Under the 1833 Act it paid about £20 million in compensation — roughly 40% of the Treasury's yearly spending, some 5% of national income. That money went to the slave owners, for their lost "property," not to the people who had been enslaved. Then, for decades, the Royal Navy's West Africa Squadron hunted slave ships at sea and freed tens of thousands. You can doubt the theology and still read the record plainly: the faith so often blamed for slavery is the faith that organized to end it.

Key Bible verses on slavery and freedom

For readers who want the primary texts in one place, here are the passages that shape the discussion, each with a word of context. All quotations are from the ESV.

• Exodus 21:16 — Man-stealing is a capital crime: "Whoever steals a man and sells him... shall be put to death."
• Exodus 21:26–27 — A servant injured by an owner (the loss of an eye or a tooth) goes free.
• Deuteronomy 15:12–15 — Hebrew servitude ends in the seventh year, with generous provision.
• Deuteronomy 23:15–16 — An escaped slave must be sheltered, not returned to his master.
• Leviticus 25:44–46 — The hard text: foreign servants could be held as inheritable property (named honestly, not skipped).
• Galatians 3:28 — "There is neither... slave nor free... for you are all one in Christ Jesus."
• 1 Corinthians 7:21 — Enslaved believers are told to gain their freedom if they can.
• Ephesians 6:9 — Masters are warned that they answer to a Master in heaven who shows no partiality.
• 1 Timothy 1:10 — "Enslavers" — slave-traders — are listed among the ungodly.
• Philemon 16 — Paul asks that a runaway slave be received "no longer as a bondservant but... as a beloved brother."

Where this leaves the objection

So "the Bible endorses slavery" turns out to be too simple. The text does not describe a modern chattel system, and where it meets the ancient one it keeps reining it in — with a single passage that sits uncomfortably and should not be explained away. The direction of the whole thing bends toward the worth of the person, until the New Testament leaves the ownership of another human with nowhere to stand.

The history that follows is the part worth sitting with. A former slave-ship captain wrote Amazing Grace because he believed he had been pulled out of something monstrous. The movement that reached around the world to end the trade was carried by people who said Scripture required it. That is a stranger, better story than the one a lot of us picked up — and a good reason to read the passages yourself rather than trust anyone's summary, this one included.

You can read any of the verses above in full, compare translations, or ask about their background in TheoGPT — a study companion, not a stand-in for reading the text yourself or working through it with other people.

Sources and further reading

• Scripture quotations are from the English Standard Version (ESV), via Bible Gateway
• Robert C. Davis, Christian Slaves, Muslim Masters: White Slavery in the Mediterranean, the Barbary Coast, and Italy, 1500–1800 (Palgrave Macmillan, 2003) — source of the 1–1.25 million estimate, which some historians regard as a high extrapolation
• Compensation figures under the Slavery Abolition Act 1833 draw on the UCL Centre for the Study of the Legacies of British Slavery
• The 1688 Germantown Quaker Petition Against Slavery — US National Park Service
• On John Newton and abolition, see the Library of Congress "Amazing Grace" collection