Old Testament Difficulty: Genocide, Slavery, and Strange Laws
Old Testament Difficulty: Genocide, Slavery, and Strange Laws
How should Christians understand conquest, slavery, troubling laws, severe punishments, and other Old Testament passages that can seem morally disturbing to modern readers?
For many people, the hardest part of believing the Bible is not miracles.
It is morality.
They open the Old Testament and encounter warfare, slavery, executions, ritual laws, sacrifices, food restrictions, purity regulations, and commands that seem completely foreign to life today.
Then comes the obvious question:
If the Bible comes from a good God, why does the Old Testament contain things that can look violent, oppressive, cruel, or simply bizarre?
Christians should not answer that question with a shrug. These passages deserve context, careful interpretation, moral seriousness, and a willingness to admit when a text is genuinely difficult.
There Is Not Just One “Old Testament Problem”
Several very different issues are often grouped together.
Conquest and Warfare
What do we do with commands to destroy or drive out Canaanite peoples?
Slavery
Why does Old Testament law regulate slavery instead of simply banning it?
Severe Laws
Why were some offenses punished so harshly?
Strange Ritual Laws
Why all the rules about food, clothing, bodily fluids, animals, sacrifices, and ceremonial purity?
These questions are related, but they should not be answered as though they are all the same issue.
Start With the World the Laws Entered
Ancient Israel did not emerge in a modern constitutional democracy with prisons, social services, police departments, employment law, international human-rights agreements, and modern courts.
It emerged in the ancient Near East.
That world included:
Clan-Based Societies
War and Conquest
Debt Servitude
Patriarchal Households
Temple Religion
Harsh Legal Codes
Understanding that setting does not automatically justify every ancient practice.
Context explains what a law is doing. Context does not turn every ancient custom into a timeless moral ideal.
Old Testament Law Was Given to a Particular Covenant People
The law of Moses was given to Israel as part of a covenant.
Israel was not simply a modern church.
It was also:
A People
A Nation
A Worshiping Community
A Covenant Society
That means its law included what we would now separate into:
civil law,
criminal law,
religious law,
public-health regulations,
worship,
family law,
and economic rules.
Christians Are Not Ancient Israel
This distinction is essential.
The New Testament does not tell churches in Rome, Corinth, Ephesus, or anywhere else to recreate Israel’s national legal system.
Christians do not:
Offer Temple Sacrifices
Enforce Israelite Food Laws
Apply Israel’s Land Laws
Execute Covenant Penalties
Conquer Holy Territory
Maintain a Levitical Priesthood
The Old Testament remains Scripture, but Christians read Israel’s law through its fulfillment in Jesus Christ.
“I have not come to abolish them but to fulfill them.”
Matthew 5:17
Fulfillment does not mean “ignore the Old Testament.”
It means the law’s meaning, trajectory, symbols, promises, and covenant setting reach their goal in Christ.
What About Genocide?
The word genocide carries a precise modern meaning: the deliberate destruction of an ethnic, national, racial, or religious group because of its identity.
That is why using the word for Israel’s conquest requires care.
The conquest accounts are certainly violent.
But the Bible does not justify Canaan’s judgment by saying:
“They are the wrong race.”
The stated basis is judgment on entrenched wickedness.
“It is on account of the wickedness of these nations that the Lord is going to drive them out before you.”
Deuteronomy 9:4
Israel is immediately warned not to imagine that it deserves the land because it is morally superior.
Israel Is Eventually Judged by the Same God
This is one of the most important facts in the Old Testament.
Israel does not receive permanent moral immunity.
When Israel becomes:
Idolatrous
Violent
Exploitative
Sexually Corrupt
Unjust
Oppressive
the prophets announce judgment.
Assyria comes.
Babylon comes.
Jerusalem falls.
The Temple is destroyed.
The biblical story does not say: “Israelites are good, foreigners are evil.” God judges His own covenant people too.
The Judgment of Canaan Is Also Presented as Delayed
“The sin of the Amorites has not yet reached its full measure.”
Genesis 15:16
The biblical picture is not instant rage.
Judgment is portrayed as delayed for generations.
Whatever difficulties remain, the narrative itself wants us to see patience before judgment.
Ancient Warfare Language May Also Be Important
Ancient military texts frequently used sweeping language for decisive victory.
Expressions such as:
“destroyed everything” or “left no survivors”
could function as conventional battle language.
Joshua itself sometimes describes sweeping victories, yet later refers to the same populations still living in the land.
Some Christians therefore understand portions of conquest language as ancient military rhetoric, not necessarily a literal claim that every civilian individual was killed.
Rahab Complicates the Idea of Ethnic Extermination
Rahab was a Canaanite.
Yet she confessed faith in Israel’s God.
She and her household were spared.
She became part of Israel’s community.
Matthew later includes her in Jesus’ genealogy.
“The Lord your God is God in heaven above and on the earth below.”
Joshua 2:11
The boundary was not simply ethnic.
But the Hardest Moral Questions Do Not Disappear
Even after discussing judgment, ancient rhetoric, and historical context, difficult questions remain.
Particularly concerning:
noncombatants and children.
Christians should resist pretending this question can be answered with one sentence.
Responsible faith can say both: “I believe God is just” and “I still find this passage morally difficult.”
What About Slavery?
This is another subject where Christians sometimes make things worse by responding too quickly.
The Old Testament clearly contains slavery and servitude.
Pretending otherwise is not helpful.
The important question is:
What forms of servitude existed in ancient Israel, how did Israelite law regulate them, and should those regulations be mistaken for a timeless endorsement of slavery?
Biblical Slavery Was Not Identical to American Racial Chattel Slavery
That distinction matters.
Much slavery in the ancient world functioned differently from the race-based, hereditary plantation slavery familiar from modern American history.
People could enter servitude because of:
Debt
Poverty
War
Economic Survival
But that distinction must not become an excuse to say:
“Biblical slavery was basically employment.”
It was not.
Human beings could be owned, controlled, bought, sold, and placed in relationships with deeply unequal power.
Ancient slavery was not identical to modern racial chattel slavery, but it was still slavery and should not be romanticized.
Israelite Debt Servitude Had Important Limits
Israelites who fell into debt could enter forms of temporary servitude.
“If any of your people — Hebrew men or women — sell themselves to you and serve you six years, in the seventh year you must let them go free.”
Deuteronomy 15:12
And when they were released, they were not supposed to be sent away empty-handed.
“Supply them liberally from your flock, your threshing floor and your winepress.”
Deuteronomy 15:14
That reflects a very different structure from permanent racial enslavement.
But Foreign Slaves Present a Harder Problem
Leviticus 25 allows Israelites to acquire slaves from surrounding nations.
The text distinguishes between Israelite debt servants and foreign slaves in ways modern readers rightly find disturbing.
Christians should not hide that passage.
The fact that a biblical law regulates an institution does not necessarily mean the institution represents God’s final moral ideal.
Regulation Is Not Always the Same as Moral Ideal
Jesus gives us an important interpretive principle when discussing divorce.
“Moses permitted you to divorce your wives because your hearts were hard. But it was not this way from the beginning.”
Matthew 19:8
Notice the distinction.
Something can be:
regulated within a fallen society
without being:
God’s creational ideal.
Biblical law sometimes restrains and regulates broken human realities rather than instantly eliminating every broken institution.
Kidnapping People for Slavery Was Condemned
“Anyone who kidnaps someone is to be put to death, whether the victim has been sold or is still in the kidnapper’s possession.”
Exodus 21:16
That is significant.
The kidnapping that fueled much of the Atlantic slave trade stands directly condemned by this law.
Escaped Slaves Were Not Automatically Returned
“If a slave has taken refuge with you, do not hand them over to their master.”
Deuteronomy 23:15
Instead:
“Let them live among you wherever they like… Do not oppress them.”
Deuteronomy 23:16
Again, this does not erase every moral problem surrounding slavery.
But it demonstrates that Israelite law included protections unusual enough to deserve attention.
What About Exodus 21 and Beating a Slave?
Exodus 21:20–21 is among the hardest slavery passages.
It addresses a master who strikes a slave.
The passage should not be sanitized.
It reflects a society with unequal legal status and power.
At the same time, surrounding laws impose consequences on masters and grant freedom when serious bodily injury occurs.
“An owner who knocks out the tooth of a male or female slave must let the slave go free to compensate for the tooth.”
Exodus 21:27
These laws restrain abuse, but they do not represent the full equality Christians see grounded in creation and fulfilled in Christ.
The Deeper Biblical Story Moves Toward Human Dignity
“God created mankind in his own image.”
Genesis 1:27
Human worth ultimately comes from bearing God’s image.
Not race.
Wealth.
Social class.
Nationality.
Citizenship.
Or legal status.
“There is neither slave nor free… for you are all one in Christ Jesus.”
Galatians 3:28
Paul is not claiming every social distinction instantly disappeared from the Roman world.
He is making a theological claim that undermines the idea that masters possess greater worth before God.
Philemon Shows the Gospel Pressing Against the Master-Slave Relationship
Paul sends Onesimus back to Philemon with remarkable language.
“No longer as a slave, but better than a slave, as a dear brother.”
Philemon 16
Paul does not give a modern abolitionist manifesto.
But calling master and slave brothers in Christ begins attacking slavery’s deepest assumption:
that one human being can possess greater human worth than another.
What About the Really Strange Laws?
Modern readers encounter commands about:
Diet
Clothing
Skin Conditions
Bodily Fluids
Animal Sacrifices
Ceremonial Purity
To us, many seem arbitrary.
But most belong within Israel’s system of holiness, worship, symbolic boundaries, and covenant identity.
“Unclean” Did Not Always Mean “Sinful”
This is one of the most important distinctions in Leviticus.
A person could become ceremonially unclean through entirely normal things, including:
Childbirth
Menstruation
Contact With a Corpse
Certain Bodily Discharges
Those things were not necessarily moral sins.
Ceremonial uncleanness and moral guilt are not the same category.
Purity Laws Taught Israel Through Symbol
The law repeatedly distinguishes:
Holy and Common
Clean and Unclean
Those categories trained Israel to think about:
God’s holiness,
mortality,
disorder,
purity,
worship,
and what it meant for a holy God to dwell among a sinful people.
Why Could Israel Eat Some Animals but Not Others?
Christians have offered different explanations.
Health may have played some role in particular cases, but the text itself emphasizes holiness and distinction.
“You must distinguish between the unclean and the clean.”
Leviticus 11:47
The laws helped mark Israel as a distinct covenant people.
Jesus Changes the Food-Law Situation
“Nothing outside a person can defile them by going into them.”
Mark 7:15
Mark explains that Jesus’ teaching has implications for food distinctions.
Acts 10 reinforces the change through Peter’s vision.
Christians do not ignore Old Testament food laws. We understand them as covenant signs fulfilled in the new-covenant era.
What About Mixed Fabrics?
Laws against certain mixtures can seem especially strange.
They occur alongside other boundary-marking commands involving:
seed,
animals,
clothing,
and fields.
Whatever every individual symbol meant, Israel was being trained to think in categories of distinction and holiness.
Why All the Blood and Animal Sacrifice?
Sacrifice is disturbing to many modern readers.
Ancient people, however, lived much closer to animal death than most modern Western readers do.
Animals were:
food,
wealth,
livelihood,
and sacrifice.
Biblical sacrifice taught that:
Sin Is Serious
Life Belongs to God
Forgiveness Is Costly
Atonement Is Needed
The New Testament Reads Sacrifice Through Jesus
“It is impossible for the blood of bulls and goats to take away sins.”
Hebrews 10:4
The sacrificial system was never the final destination.
Christians understand it as preparing for Christ’s once-for-all sacrifice.
Why Were Some Punishments So Severe?
Old Testament law includes death penalties for offenses modern societies usually punish differently or not at all.
That understandably troubles people.
Several things should be remembered.
Israel’s Covenant Society Was Unique
Israel understood itself as a nation living under direct covenant with God.
Religious apostasy could therefore carry both:
Covenant Meaning
National Meaning
Modern Christians do not live in that covenant arrangement.
A Legal Penalty Does Not Tell Us How Often It Was Carried Out
Ancient laws often establish maximum penalties, judicial seriousness, and covenant boundaries.
Scripture does not provide complete court records showing how frequently every penalty was actually imposed.
That should make us cautious about reconstructing ancient Israel as though executions happened automatically for every accusation.
There Were Significant Evidentiary Safeguards
“No one shall be put to death on the testimony of only one witness.”
Deuteronomy 17:6
False witnesses also faced serious consequences.
The system was not meant to permit casual accusations followed by immediate execution.
“Eye for Eye” Was a Limit on Vengeance
“Eye for eye, tooth for tooth.”
Exodus 21:24
To modern ears, that sounds brutal.
But the principle limited retaliation.
If someone knocked out a tooth, you did not get to kill his entire family.
Punishment was to be proportionate, not escalating.
Jesus Then Takes His Disciples Beyond Personal Retaliation
“You have heard that it was said, ‘Eye for eye, and tooth for tooth.’ But I tell you, do not resist an evil person.”
Matthew 5:38–39
Jesus is not claiming the original law was evil.
He calls His followers away from using justice principles as justification for personal revenge.
What About Laws Concerning Women?
Some Old Testament laws reflect a patriarchal society where women had less social and economic power than men.
Christians should neither pretend otherwise nor assume every law endorses every feature of that society.
Some laws offer protections within that world.
Others remain difficult to modern readers.
Sexual-Violence Texts Must Be Handled With Particular Care
Passages involving rape, seduction, marriage arrangements, and sexual wrongdoing are among the easiest to misuse through careless translation or simplistic explanation.
Different passages describe different circumstances and should not all be collapsed into one category.
Scripture never gives Christians permission to excuse sexual violence, coercion, or abuse.
The Bible’s Starting Point Is Equal Human Dignity
Before kings, nations, social classes, Israel, or Mosaic law, Genesis declares:
“God created mankind in his own image.”
Genesis 1:27
Male and female both bear God’s image.
That truth becomes an important standard for understanding the biblical movement toward restored relationships.
Old Testament Law Also Commands Love for the Foreigner
“Love those who are foreigners, for you yourselves were foreigners in Egypt.”
Deuteronomy 10:19
This is easy to overlook when difficult laws receive all the attention.
Israel is repeatedly reminded that its own history of oppression should make it compassionate.
The Law Repeatedly Protects the Vulnerable
“Do not take advantage of the widow or the fatherless.”
Exodus 22:22
Israel’s law repeatedly speaks about:
The Poor
The Widow
The Orphan
The Foreigner
Even Farming Law Included Provision for the Poor
“Do not reap to the very edges of your field… Leave them for the poor and for the foreigner.”
Leviticus 19:9–10
Farmers were not permitted to maximize every possible bit of personal profit.
Space was built into the economic system for vulnerable people.
Even Servants Received Sabbath Rest
The Sabbath command specifically includes:
“Neither you, nor your son or daughter, nor your male or female servant… so that your male and female servants may rest, as you do.”
Deuteronomy 5:14
In an ancient labor economy, that is significant.
Israel’s Economic Laws Also Contained a Reset Principle
Sabbatical and Jubilee legislation aimed at preventing debt, poverty, and land loss from permanently swallowing families.
Scholars debate how fully those laws were historically practiced.
But the theological principle is clear:
Wealth, debt, land, and economic power were not meant to become unlimited tools for permanent exploitation.
Should We Read the Bible as a Moral Trajectory?
Some Christians use the language of trajectory.
The idea is that Scripture meets people inside deeply fallen historical cultures, restrains evil, redirects society, and gradually points toward fuller moral clarity in Christ.
Others prefer the language of covenant development or progressive revelation.
The terminology varies, but the central observation is important:
Not every regulation in ancient Israel is presented as the final form of life in God’s kingdom.
Creation and Christ Give Us the Larger Moral Frame
We should read difficult laws between two major biblical realities.
God’s Good Intention
Humanity bears God’s image, creation is good, and human beings are made for relationship with God and one another.
God’s Clearest Revelation
Jesus shows us what love, holiness, justice, mercy, and human life under God are meant to become.
Jesus Is Not Embarrassed by the Old Testament
Jesus quotes it.
Teaches from it.
Calls it Scripture.
Sees His mission as fulfilling it.
Yet He also brings its story into a new stage.
“Anyone who has seen me has seen the Father.”
John 14:9
Christians cannot solve Old Testament difficulty by rejecting the Old Testament God, because Jesus identifies that God as His Father.
And Jesus Calls His People to Love Their Enemies
“Love your enemies and pray for those who persecute you.”
Matthew 5:44
That means Christians cannot take Israel’s conquest and convert it into a standing command for religious warfare.
The church conquers differently.
By witness.
Service.
Truth.
Prayer.
Sacrifice.
And enemy love.
The Cross Becomes the Center of the Moral Story
The Bible’s answer to human evil is not finally:
stronger people defeating weaker people.
At the center stands Jesus, willingly suffering at the hands of violent people.
“Christ suffered for you, leaving you an example, that you should follow in his steps.”
1 Peter 2:21
The King wins through the cross.
He defeats evil without becoming evil.
He exposes violence by absorbing it.
And He responds to enemies with forgiveness.
But Jesus Does Not Eliminate Judgment
This matters too.
Sometimes people contrast:
Old Testament judgment with New Testament love.
But Jesus speaks seriously about judgment.
So do Paul, Peter, and Revelation.
The biblical movement is not from “judgment” to “no judgment.” It is toward the final union of justice and mercy in Christ.
Would We Want a God Who Never Judges Evil?
There is a tension in many modern objections.
We are outraged when evil goes unpunished.
But we are also troubled when Scripture speaks of God judging evil.
Both instincts tell us something important.
We want:
Justice
Mercy
Accountability
Compassion
Christianity claims these finally meet in Jesus.
Christians Do Not Need to Defend Every Ancient Practice
This is crucial.
The Bible records:
polygamy.
violence.
slavery.
deceit.
warfare.
sexual abuse.
political corruption.
family dysfunction.
The fact that something appears in the biblical story does not mean God approves it.
Description is not prescription, and regulation is not always endorsement.
The Bible Is Messier Than We Sometimes Want Because Human History Is Messy
The Bible does not describe an imaginary world populated by ideal people.
It describes our world.
A world of:
War
Greed
Sexual Sin
Oppression
Power
Death
The scandal of the Bible is not that God waits for perfect cultures before dealing with humanity. He enters broken history and begins redeeming people inside it.
Progressive Revelation Helps Us Read the Whole Story
Progressive Revelation
God reveals His purposes through history, with earlier stages preparing the way for fuller revelation in Jesus Christ.
This does not mean earlier Scripture is false.
It means earlier revelation belongs to an unfolding story.
Creation
Patriarchs
Israel
Prophets
Christ
New Creation
The Biblical Story Does Not End With Ancient Israel’s Laws
It ends with something radically different.
“There will be no more death or mourning or crying or pain.”
Revelation 21:4
The Bible begins with creation without oppression and ends with creation restored.
Slavery, conquest, violence, death, impurity, and sacrifice do not have the final word.
How Should We Read Difficult Old Testament Laws?
Read the Historical Context
Identify the Covenant Setting
Ask What the Law Regulates
Distinguish Regulation From Ideal
Look for Protection and Restraint
Compare With the Whole Bible
Read Through Christ
Allow Some Questions to Remain Difficult
Four Answers That Are Too Easy
“God Said It, So It Cannot Be Difficult”
Trust in God does not require pretending hard passages are emotionally easy.
“Ancient Slavery Was Basically Employment”
Too simplistic. Forms differed, but slavery still involved profound power inequality.
“The Old Testament Was Just Barbaric”
This ignores its serious concern for justice, the poor, foreigners, and restraint of power.
“Jesus Replaced the Old Testament God”
Jesus Himself does not allow that solution.
A Difficult-Text Heart Audit
Am I Reading in Context?
Do I know what kind of society the law was addressing?
Am I Confusing Regulation With Approval?
Could the law be restraining a broken institution rather than presenting it as God’s ideal?
Am I Reading the Whole Bible?
How does this text fit with creation, prophets, Jesus, the apostles, and new creation?
Am I Minimizing Real Moral Difficulty?
Have I rushed to defend a passage without honestly hearing why it troubles people?
Am I Applying Ancient Israel Directly to the Church?
Have I accounted for covenant fulfillment in Christ?
Is Jesus Shaping My Picture of God?
Am I reading difficult texts in light of the One Christians believe reveals the Father?
Genocide, Slavery, and Strange Laws in Plain Talk
Old Testament difficulty is real. Christians should not dismiss moral objections to conquest, slavery, harsh penalties, or strange laws.
The law was given within an ancient covenant society. Israel combined religious, civil, national, economic, and ceremonial life in ways modern societies generally do not.
Christians are not called to recreate ancient Israel. Israel’s land laws, sacrifices, national penalties, food laws, and conquest commands are not standing commands for the church.
The conquest of Canaan is framed as divine judgment, not racial superiority. Israel is also warned that it will be judged if it practices the same evils.
Some conquest language may use conventional ancient warfare rhetoric. That can affect how sweeping destruction language should be understood.
Serious moral questions about warfare remain. Historical context helps, but it does not require Christians to pretend every question is emotionally resolved.
Biblical slavery was not identical to modern racial chattel slavery. But that does not mean ancient slavery was harmless or merely ordinary employment.
Some Israelite servitude functioned as debt service and included release provisions. Other forms, especially involving foreigners, are morally more difficult.
The law restrains several abuses. Kidnapping people for sale is condemned, escaped slaves receive protection, serious bodily injury can require release, and Israelite debt servants are to be freed.
Regulation is not necessarily endorsement. Jesus Himself distinguishes between what Moses permitted in a hard-hearted society and God’s creational intention.
“Clean” and “unclean” do not simply mean morally good and evil. Many strange laws belong to Israel’s ceremonial system of holiness and worship.
Food, sacrifice, and purity laws point beyond themselves. Christians understand those systems as fulfilled in Christ.
The Bible contains a strong concern for vulnerable people. Laws protect foreigners, widows, orphans, the poor, debtors, servants, and those without land.
Jesus becomes the decisive center of Christian interpretation. He fulfills Israel’s story, calls His followers to enemy love, and forms a people whose mission is Gospel witness rather than territorial conquest.
The Bible ends beyond these broken institutions. Its final vision is a new creation without death, oppression, slavery, mourning, or violence.
The Bible Does Not Give Us a Sanitized Human Story
It gives us a world of war.
Slavery.
Poverty.
Patriarchy.
Violence.
Disease.
Death.
And people who repeatedly misuse power.
That world can feel distant.
Yet in other ways, it sounds painfully familiar.
The biblical story is not that God discovered morally perfect people and gave them perfect institutions.
It is that God entered a deeply broken human world and began a long work of judgment, restraint, covenant, mercy, redemption, and restoration.
The story moves through Israel.
Through the prophets.
Through exile.
Through promise.
Until finally it reaches Jesus.
And in Jesus, Christians believe we see not only where the biblical story came from, but where it was always going.
Toward reconciliation.
Toward enemy love.
Toward justice without vengeance.
Toward freedom.
Toward restored human dignity.
And finally, toward a creation where exploitation, bloodshed, slavery, and death themselves are gone.
Some Old Testament passages may remain difficult. But difficult does not mean meaningless, and unresolved does not mean there is no larger story.
“Father, some parts of Scripture are difficult for me. Give me honesty rather than easy answers, wisdom rather than slogans, and humility when I do not fully understand. Help me see the historical world of the Old Testament clearly, the brokenness of humanity honestly, and Your redemptive purposes faithfully. Above all, help me read the whole story in light of Jesus Christ — full of truth, justice, mercy, and grace. Amen.”
Christians do not believe the Old Testament’s difficult institutions are the final picture of God’s kingdom. The story moves toward Jesus, the cross, resurrection, and finally a new creation.
Humanity is created in God’s image.
Sin corrupts human relationships.
God enters human history.
Law restrains and teaches.
Prophets call for justice.
Jesus fulfills the story.
The cross confronts human violence.
The resurrection begins new creation.
And God promises a world where death and oppression are finally gone.
“He will wipe every tear from their eyes. There will be no more death or mourning or crying or pain.” Revelation 21:4