Leviticus 18 Summary and Study Guide

Israel is camped between two countries: the Egypt they were carried out of and the Canaan they are walking into. Leviticus 18 tells them to live like neither. This Leviticus 18 summary and study guide follows the lines God draws around the household, and the reason He gives no reason for them until verse 24.

Setting the Stage

Hundreds of years before Israel existed as a nation, God promised Abraham a land, and told him his descendants would not receive it for four generations, because the people already living there had not yet filled up their own wickedness (Genesis 15:16).

Israel is now out of Egypt and camped at Mount Sinai, a year into the wilderness, waiting to go and take that land. Leviticus 16 gave them a yearly day for covering sin, and Leviticus 17 told them the life is in the blood and that blood must be brought to God’s altar. Leviticus 18 turns from the altar to the house, and it opens by naming the two countries Israel must not copy.

Comprehensive Leviticus 18 Summary

God speaks to Moses and gives Israel a sentence before He gives them a command: “I am the LORD your God” (18:2). He belongs to them and they belong to Him, and every line that follows rests on that. Then comes the frame.

Israel must not live the way Egypt lived, where they had been slaves, and must not live the way Canaan lives, where God is taking them. They are to live by God’s own rules instead, and a man who keeps them will live in them.

On that footing God states one rule: no Israelite may come near a close relative for sex. The rest of the list applies it. It begins inside the house with a mother, a father’s wife, a sister, a granddaughter and a half-sister, then works outward to aunts by blood and by marriage, a daughter-in-law and a brother’s wife. Two combinations follow, and one rivalry: a man may not marry his wife’s sister as a second wife while his wife is alive.

Five more boundaries close the list: a woman during her monthly period, whom Leviticus 15 had already set apart as ceremonially unclean rather than sinful, a neighbour’s wife, a child given to Molech, a man with a man, and a person with an animal.

Only at verse 24 does God say why. The nations in Canaan are being driven out for exactly these things. The land is defiled by them, and the land throws its own inhabitants out. The rule holds for a foreigner staying among them as much as for an Israelite.

If Israel does what Canaan did, the land will do to Israel what it is doing to the people living there now, and anyone who does these things is cut off from his own people. Then the chapter closes with the words it opened with.

One Word Summary

• Boundaries: God draws lines around the household and names every one.
• Belonging: each command hangs on the sentence “I am the LORD your God”.
• Defilement: the chapter’s own word for the damage done.

In One Sentence

God tells Moses to warn Israel against living like Egypt or Canaan, forbids them every relationship listed from verse 6 to verse 23, and warns that the land itself will spit out anyone who defiles it.

Theme of Leviticus 18

Leviticus 18 is about holiness reaching into the household. Everything in the book before this has governed the altar, the priest and the camp; this chapter governs the family, and it grounds every line in who God is rather than in what the surrounding nations permit.

Two ideas run alongside that one. Obedience is set out as the shape of a good life rather than the price of one (18:5). And sin is never handled here as private business, because by the end of the chapter it has reached a whole country and everyone standing on it.

Leviticus 18 Outline

• Leviticus 18:1-5: God names Himself, forbids the ways of Egypt and Canaan, and puts His own statutes in their place with a promise of life.
• Leviticus 18:6: God states the rule that governs everything after it, forbidding any Israelite to approach a close relative for sex.
• Leviticus 18:7-11: The rule is applied to a mother, a father’s wife, a sister, a granddaughter and a half-sister born to the father’s wife.
• Leviticus 18:12-16: The same rule reaches outward to aunts by blood and by marriage, a daughter-in-law and a brother’s wife.
• Leviticus 18:17-18: A man is forbidden a woman together with her daughter or granddaughter, and forbidden to marry his wife’s sister as a rival while his wife lives.
• Leviticus 18:19-20: Relations are forbidden with a woman set apart in her uncleanness and with a neighbour’s wife.
• Leviticus 18:21: Israel is forbidden to give any child to pass through the fire to Molech.
• Leviticus 18:22-23: Relations are forbidden between a man and a man, and between a person and an animal.
• Leviticus 18:24-30: God gives His reasons, warning that the nations are being cast out for these things, that a defiled land throws out its inhabitants, and that whoever does them is cut off.

The List of Forbidden Relationships

Verses 6 to 18 are the fullest list of forbidden family relationships in the Bible. Verse 6 states the rule; the verses under it apply it one relationship at a time, moving outward from the people who share a roof to the people marriage has made family. Leviticus 20:11-21 covers most of the same ground and adds the penalties, and Deuteronomy 27:20-23 gives a shorter version sworn under a curse.

Who Is Named, and Why

The rest of the Bible shows these lines being crossed by name. Reuben went in to his father’s concubine (Genesis 35:22), and Jacob took his standing as firstborn from him for it (Genesis 49:4; 1 Chronicles 5:1), which is verse 8. Amnon forced his half-sister Tamar (2 Samuel 13), which is verse 9.

John the Baptist told Herod he could not have his brother’s wife, and lost his head over it (Mark 6:17-18, 27), which is verse 16. And Paul had to write to a church where a man had his father’s wife (1 Corinthians 5:1), which is verse 8 again, this time inside the New Testament.

Readers often notice that a man’s own daughter is not named in the list. Jewish teachers have long answered that the prohibition was too obvious to write down and is already carried by verse 10, which forbids a granddaughter, and by verse 6, which forbids any close relative at all. Verse 17, which forbids a woman together with her daughter, covers it too.

Observations from Leviticus 18

God Signs the Chapter Six Times, and Once Inside the List

“I am the LORD” or “I am the LORD your God” closes verses 2, 4, 5, 6, 21 and 30. The formula tells Israel where the commands come from: the God who has already claimed them as His own. Three of those six carry the words “your God” and they sit at the outer edges of the chapter, at the opening, at the turn into the commands, and at the very last line. Between verses 7 and 23, where the prohibitions run one after another, the signature appears exactly once, on verse 21.

Verse 21 Is the Only Command Here That Is Not About Sex

Verse 21 sits among commands about sexual acts and concerns something else entirely, a child handed over to an idol: “thou shalt not let any of thy seed pass through the fire to Molech, neither shalt thou profane the name of thy God.” Israel is not to give any of its children to Molech, and doing so would drag God’s own name through it. Putting that command here, and marking it with the divine name, may be pointing at how closely the worship of Canaan and the sexual practices of Canaan were tied together.

One Vocabulary Runs to Verse 19, Another Takes Over at Verse 20

“Nakedness” and “uncover” belong entirely to verses 6 through 19, and both words are the chapter’s way of saying sexual relations. From verse 20 onward the words change to “defile” and its forms, which carry through to the last verse. God names the acts first and names what they do second, which is why the chapter can feel like a bare list until verse 24.

The Land Is Named Only in the Frame

“Land” appears in verses 3, 25, 27 and 28 and nowhere inside the list of prohibitions. It opens the chapter, naming Egypt and Canaan, and it closes the chapter, warning that the ground will not keep a people who pollute it. The prohibitions sit inside that frame. What a person does behind a door is treated here as something the whole country ends up carrying.

Difficult Verses Explained

Does Leviticus 18:5 Mean a Person Can Earn Life by Keeping the Law?

The verse holds out life to the man who keeps God’s statutes, and the New Testament quotes it as exactly that standard. Paul cites it in Romans 10:5 to describe the righteousness that comes by law, and again in Galatians 3:12 to show that the law works on a different principle from faith.

Jesus puts the same logic to a lawyer in Luke 10:28. The promise stands; the keeping is where every person fails, and Romans 10:4 answers that by pointing past the law to Christ, who gives right standing with God to everyone who believes.

Why Does Leviticus Forbid Marrying a Brother’s Widow When Deuteronomy Commands It?

The two passages govern two different situations, and the difference is death. Leviticus 18:16 forbids a man his living brother’s wife, which would break his brother’s marriage. Deuteronomy 25:5-10 commands a man to marry his brother’s childless widow so that the dead man’s name and inheritance stay in Israel. Deuteronomy 25:6 states that purpose in one line, and it limits the permission to that one case.

What Does “A Wife to Her Sister” Mean in Leviticus 18:18?

The verse forbids a man to take a second wife while the first is living, in a way that would make the two women rivals. The word behind “to vex her” carries the sense of crowding or distressing someone, and the reason given in the verse is the harm to the first wife rather than a family tie.

Some older commentators read the Hebrew as “one wife to another” and take the verse to restrain polygamy in general; others read it as two literal sisters, which is the situation Jacob lived in with Leah and Rachel. Either way, the verse is not addressing a man who marries his wife’s sister after his wife has died, and it should not be pressed into that argument.

Why Is a Woman’s Monthly Period Listed Among These Sins?

Leviticus 18:19 picks up a rule already given in Leviticus 15:19-24, where a man who broke it became unclean for seven days. The setting has changed, because the same act now appears in a list of serious offences, and Leviticus 20:18 attaches being cut off to it. Commentators divide on whether this is a purity provision carried over from chapter 15 or a stricter moral command, and Scripture does not settle the question in either place.

Did Children Actually Die in Molech Worship, or Does “Pass Through the Fire” Mean Something Else?

Scripture points toward the children actually dying. The chapter says only that a child was made to “pass through the fire”, and some Jewish teachers understood that as a dedication rite rather than a killing.

Yet 2 Kings 23:10 and Jeremiah 7:31 use the same language for burning sons and daughters, and Psalm 106:37-38 and Ezekiel 16:20-21 speak plainly of children slain. The familiar picture of a brass idol with outstretched arms and drums beaten to cover the cries comes from later Jewish tradition rather than from the Bible, and it should be repeated as tradition.

What Does “Cut Off From Among Their People” Actually Mean?

The phrase covers a range rather than one fixed punishment, and Leviticus 20 is where the range shows. Its plain sense is severance from the people God had given a man to belong to, which is the very thing every line in this chapter was drawn to protect. The offence decided how that severance came, whether through the courts, through childlessness, or from God directly, and the table above sets the cases side by side.

Common Misunderstandings

• “These are ceremonial rules like the food laws, so they lapsed.” Incest, adultery and bestiality sit in this same chapter, and the penalties Leviticus 20 attaches to them are of a different order altogether from the short uncleanness attached to unclean food. The New Testament sets the food laws aside (Mark 7:18-19; Acts 10:15), while Romans 1:26-27, 1 Corinthians 6:9 and 1 Timothy 1:10 carry these prohibitions straight into it.
• “The chapter only condemns these acts inside pagan worship.” Verse 20 forbids ordinary adultery with no ritual anywhere in view, and verse 26 binds the foreigner living in Israel, who was not under Israel’s ceremonial law.
• “The Bible describes Molech as a brass idol with outstretched arms.” It does not. That description comes from later Jewish writers. The Bible says a child was made to pass through the fire, and other passages show what that came to mean.
• “The land vomiting out its people is only a figure of speech.” It is a figure, and it also happened. 2 Kings 17:6-8 records the northern tribes carried out of that same land for walking in the ways of the nations God had driven out before them.

What Leviticus 20 Adds

Leviticus 18 gives one consequence for the whole chapter, and it gives it in one phrase: “shall be cut off from among their people” (18:29). Leviticus 20 comes back to nearly the same list and says what that meant case by case, so the two belong side by side.

The Same Acts, With the Penalty Attached

Two notes belong with this table. Childlessness appears here as a sentence passed on two particular offences, and Scripture nowhere treats childlessness in general as a punishment; Hannah, Elizabeth and the Shunammite woman were all childless without any sin being named. Leviticus 18 also names none of these penalties itself, which is why the two chapters have to be set side by side.

These were also the criminal penalties of one nation living under its own law with its own courts. The church was never given them to carry out, which is why Paul answers a case straight out of Leviticus 18:8 with removal from the congregation and a hope of the man’s restoration rather than a sentence (1 Corinthians 5:1-5).

Christ Connection

The chapter opens with a promise of life to whoever obeys these statutes (18:5) and closes by warning that the land will vomit out the people who defile it (18:25, 28). The warning landed on them. Ezekiel says plainly that God scattered His people out of that land because they had defiled it (Ezekiel 36:17-19).

In that same chapter of Ezekiel, God gives the answer Leviticus 18 cannot give itself: clean water, a new heart, a new spirit, and His own Spirit put inside a person to make him walk in the statutes God commanded (Ezekiel 36:25-27).

Leviticus 18 can draw the line. It cannot put anything inside a person that makes him want to stay behind it. That is what God promises to do Himself, and what Jeremiah 31:33 calls writing His law on the heart. Jesus named His own blood as the new covenant on the night before He died (Luke 22:20), so the heart Ezekiel promised is given through Him.

The rest of the chapter points the same direction:

• The promise of 18:5 meets its answer in Christ. Paul quotes the verse in Romans 10:5 and Galatians 3:12 as the law’s own terms, then names Christ as the end of the law for righteousness (Romans 10:4) and says He was made a curse for us (Galatians 3:13).
• The sentence of 18:29 echoes in what happened to Christ. Daniel 9:26 says Messiah would be cut off, and Isaiah 53:8 says He was cut off out of the land of the living. Scripture uses that same language of Christ, and He had broken none of the commands this chapter gives.
• Molech took children; God gave His Son. Verse 21 forbids a parent to give up a child to an idol. God gave up His own Son for the people this chapter condemns (Romans 8:32).
• Jesus grounds these boundaries where the chapter grounds them. He goes behind the law to the creation of male and female and the one-flesh union of marriage (Matthew 19:4-6).
• The list is not the last word over anyone who leaves it behind. Paul repeats the list to the Corinthians as a warning, and then writes, “And such were some of you: but ye are washed, but ye are sanctified, but ye are justified in the name of the Lord Jesus” (1 Corinthians 6:9-11). People who had done these things had been cleansed, set apart and declared right with God through Jesus. Paul sets the warning and the washing in one paragraph, and Titus 2:11-12 says why: the grace that saves also teaches a person to turn from ungodliness.

When, Where, and Why

• When: during the year Israel spent camped at Mount Sinai after leaving Egypt, likely around 1445 BC on the earlier dating of the exodus, before the nation entered Canaan. The whole book is walked through in our Book of Leviticus Summary by Chapter.
• Where: the wilderness of Sinai, with Egypt behind them and Canaan ahead. Verse 3 turns that position into a command. Older commentators note that Egypt permitted marriage between brother and sister, including inside the royal house, and that Canaanite worship used sexual acts as part of the ritual itself, so the two countries named in verse 3 were the two nearest models Israel had.
• Why: Moses wrote it as part of the block of law running from Leviticus 17 to Leviticus 26, which scholars often label the Holiness Code, and which turns from how Israel worships to how Israel lives. Israel was about to move into a land whose people were being displaced for these very practices, and God was building a nation out of households. The chapter protects the household so the nation can exist, and it protects Israel from repeating the offence that was emptying the land in front of them.

Key Verses

“After the doings of the land of Egypt, wherein ye dwelt, shall ye not do: and after the doings of the land of Canaan, whither I bring you, shall ye not do: neither shall ye walk in their ordinances.”

Leviticus 18:3

Israel is not to copy the country they came out of or the country they are moving into, and not to follow the rules those nations live by. God calls the customs of Egypt and Canaan “ordinances”. That is the same word He uses of His own commands, which may suggest how much authority a culture’s ordinary habits carry.

“None of you shall approach to any that is near of kin to him, to uncover their nakedness: I am the LORD.”

Leviticus 18:6

God bars every Israelite from approaching a close relative for sex. “Near of kin” here reaches past blood to the family marriage creates, which is why a brother’s wife and an uncle’s wife appear in the same list as a mother and a sister, and God signs the rule with His own name.

“Thou shalt not lie with mankind, as with womankind: it is abomination.”

Leviticus 18:22

A man is not to have sexual relations with another man, and God calls the act detestable. It stands in the short run of commands in verses 19 to 23, stated in one line and left there, with the penalty supplied later in Leviticus 20:13.

“And the land is defiled: therefore I do visit the iniquity thereof upon it, and the land itself vomiteth out her inhabitants.”

Leviticus 18:25

The land has been made unclean, God is punishing its sin, and it is expelling everyone who lives there. It is the image the chapter is remembered for, and it turns a list of private acts into a matter of whether a people can stay where they are.

“Therefore shall ye keep mine ordinance, that ye commit not any one of these abominable customs, which were committed before you, and that ye defile not yourselves therein: I am the LORD your God.”

Leviticus 18:30

Israel is to keep what God has charged them with, avoid the detestable customs practised in the land before them, and not make themselves unclean by them. God calls those practices customs, which is what they had become to the people already living there: normal and inherited.

Key Lessons from Leviticus 18

• God tells Israel who He is before He tells them what to do, and the commands never leave that footing (18:2).
• A people who belong to God take their pattern of living from neither the world they came out of nor the world they are moving into (18:3).
• Every line drawn in verses 6 to 18 protects the household, so that the place a person is most exposed is meant to be the place they are safest.
• The chapter says nothing about consequences until verse 24, and when it does the consequence is a whole land, which is how it answers the idea that private conduct stays private (18:24-28).

To go deeper into the lessons from this chapter, read our full study: 10 Life-Changing Lessons from Leviticus 18.

Bible Study Questions

1. Verse 2 puts “I am the LORD your God” ahead of the first command. What difference does that order make to the way you read the rest of the chapter?
2. Verse 3 names two countries. What does each one stand for in Israel’s story, and which of the two would have been harder to resist?
3. Every entry in verses 7 to 16 points back to the family bond as its reason. Why might God argue that way instead of listing the harm each act would cause?
4. Read Leviticus 18:5 and then Ezekiel 36:25-27. What does the later promise supply that the command in Leviticus could not?
5. The chapter withholds its reasons until verse 24, and then names the land. What is Leviticus 18 saying about how far the effects of sin travel?

When you have worked through the chapter, test what you remember with our Leviticus 18 Quiz with Answers.

Frequently Asked Questions

Leviticus 18, The Full Text (KJV)

Read the full chapter below for reference.

1 And the LORD spake unto Moses, saying,

2 Speak unto the children of Israel, and say unto them, I am the LORD your God.

3 After the doings of the land of Egypt, wherein ye dwelt, shall ye not do: and after the doings of the land of Canaan, whither I bring you, shall ye not do: neither shall ye walk in their ordinances.

4 Ye shall do my judgments, and keep mine ordinances, to walk therein: I am the LORD your God.

5 Ye shall therefore keep my statutes, and my judgments: which if a man do, he shall live in them: I am the LORD.

6 None of you shall approach to any that is near of kin to him, to uncover their nakedness: I am the LORD.

7 The nakedness of thy father, or the nakedness of thy mother, shalt thou not uncover: she is thy mother; thou shalt not uncover her nakedness.

8 The nakedness of thy father’s wife shalt thou not uncover: it is thy father’s nakedness.

9 The nakedness of thy sister, the daughter of thy father, or daughter of thy mother, whether she be born at home, or born abroad, even their nakedness thou shalt not uncover.

10 The nakedness of thy son’s daughter, or of thy daughter’s daughter, even their nakedness thou shalt not uncover: for theirs is thine own nakedness.

11 The nakedness of thy father’s wife’s daughter, begotten of thy father, she is thy sister, thou shalt not uncover her nakedness.

12 Thou shalt not uncover the nakedness of thy father’s sister: she is thy father’s near kinswoman.

13 Thou shalt not uncover the nakedness of thy mother’s sister: for she is thy mother’s near kinswoman.

14 Thou shalt not uncover the nakedness of thy father’s brother, thou shalt not approach to his wife: she is thine aunt.

15 Thou shalt not uncover the nakedness of thy daughter in law: she is thy son’s wife; thou shalt not uncover her nakedness.

16 Thou shalt not uncover the nakedness of thy brother’s wife: it is thy brother’s nakedness.

17 Thou shalt not uncover the nakedness of a woman and her daughter, neither shalt thou take her son’s daughter, or her daughter’s daughter, to uncover her nakedness; for they are her near kinswomen: it is wickedness.

18 Neither shalt thou take a wife to her sister, to vex her, to uncover her nakedness, beside the other in her life time.

19 Also thou shalt not approach unto a woman to uncover her nakedness, as long as she is put apart for her uncleanness.

20 Moreover thou shalt not lie carnally with thy neighbour’s wife, to defile thyself with her.

21 And thou shalt not let any of thy seed pass through the fire to Molech, neither shalt thou profane the name of thy God: I am the LORD.

22 Thou shalt not lie with mankind, as with womankind: it is abomination.

23 Neither shalt thou lie with any beast to defile thyself therewith: neither shall any woman stand before a beast to lie down thereto: it is confusion.

24 Defile not ye yourselves in any of these things: for in all these the nations are defiled which I cast out before you:

25 And the land is defiled: therefore I do visit the iniquity thereof upon it, and the land itself vomiteth out her inhabitants.

26 Ye shall therefore keep my statutes and my judgments, and shall not commit any of these abominations; neither any of your own nation, nor any stranger that sojourneth among you:

27 (For all these abominations have the men of the land done, which were before you, and the land is defiled;)

28 That the land spue not you out also, when ye defile it, as it spued out the nations that were before you.

29 For whosoever shall commit any of these abominations, even the souls that commit them shall be cut off from among their people.

30 Therefore shall ye keep mine ordinance, that ye commit not any one of these abominable customs, which were committed before you, and that ye defile not yourselves therein: I am the LORD your God.