Numbers 5: Purity in the Camp Where God Dwells

Introduction

For several weeks, Action Biblique Servette has been going through the book of Numbers, the story of the people God chose and freed from slavery in Egypt. Last week, the theme was order in the camp. This time, it is purity in the camp. The reason comes down to one sentence: since God dwelt in the middle of the camp, the camp had to be pure.

The preacher had planned to cover several chapters. While studying Numbers 5, he gave that up: "there is so much to say" that he did not want to rush. The chapter contains three laws: the exclusion of unclean people, making wrongs right, and the ordeal imposed on a woman suspected of adultery. That last one may seem strange to you. The preacher takes the time to place it in its own era, and then to draw out what it says about God, sin, and marriage.

Before opening the text, he prayed that the congregation would have "a tender heart," able not only to listen to the Word but to receive it and submit to it.

Outline of the Message

1. Why Some Had to Leave the Camp

Numbers 5:1-4: three categories of people had to live apart from the camp until they were purified: people with a skin disease, people with a discharge, and people who had touched a dead body.
The word translated "leprosy" is broader than Hansen's disease alone: it refers to any skin eruption. The discharge included women's periods. And simply entering a tent where someone had died was enough to become unclean.
It was hard. These people were deprived of social life, of friends, of family. The preacher invites us to imagine a mother with a chronic skin disease, who cannot watch her children grow up. According to Leviticus 13:45, the unclean person had to cover his beard and cry out: "Unclean! Unclean!"
Why did God ask for this? The first answer is God's goodness. Some skin diseases are highly contagious. Without today's medicines, a mild illness could kill. God gave hygiene rules to protect the healthy, as we still do with contagious diseases.
The second answer is a lesson: "Sin is incompatible with the presence of God." The tabernacle stood in the middle of the camp.
The preacher makes it clear: uncleanness is not sin. Someone who saw a person die suddenly beside him had not sinned, but he became unclean. Uncleanness represents sin; it symbolizes it. Someone who was unclean could not approach God or take part in worship.
"That is not fair, you don't choose to have a skin disease." The preacher answers: that is true, and it is like sin. We do not choose to be sinners; we are sinners from birth. We are unclean, and we should be outside the camp.
"But thankfully, there is Jesus." He cleanses us from all unrighteousness (1 John 1:9). He was cast out of the camp in our place: he was pierced for our transgressions, crushed for our iniquities, and by his stripes we are healed (Isaiah 53:5).

2. Tolerated Sin Contaminates the Camp

Verse 3 gives the reason for the exclusion: "that they don't defile their camp, in the midst of which I dwell." The sin of one person, represented by uncleanness, affects the whole camp.
Today, the camp is the Church, where God dwells by the Holy Spirit. In 1 Corinthians 5, Paul asks the church to remove the evil person from among them, regarding a man who was living in sexual immorality without repenting. He adds: "a little yeast leavens the whole lump."
The preacher says that no church discipline has been carried out since he arrived in 2024, and that he hopes never to have to do it. But if it becomes necessary, it will have to be done: it is a command of Jesus (Matthew 18:15-17). The danger is that tolerated sin becomes normal and multiplies.
He is speaking about sin that is justified and unrepented. He is not speaking about someone who falls, even repeatedly, and wants out. For that person, there is grace: "He who conceals his transgressions will not prosper, but whoever confesses and renounces them will obtain mercy" (Proverbs 28:13).
The Church does not put under discipline those who acknowledge their sin. It helps them, with the confidentiality and humility that the care of souls requires. If you need help, there are trustworthy people in the Church: go and find them.

3. Making Right the Wrong Done to Your Brother

Verses 5 to 10 complete a law already given in Leviticus about wrongs between people, such as a theft or a damaged object. The one who sinned must confess, make restitution, and add a fifth, that is 20%.
All three matter. Not confessing is denying the facts. Not making restitution is remaining unjust toward the victim. Not adding the fifth encourages doing it again: "if it costs nothing, I will keep on stealing."
The text also covers the case where the victim has died: the restitution goes to the nearest relative. If there is none, it goes to Yahweh, through the priest, with a ram of atonement (verse 8).
The heart of this law: "a sin against a brother is a sin against God." Verse 6 speaks of unfaithfulness against Yahweh.
David understood this after his sin with Bathsheba. He had committed adultery and had the husband killed, and yet he says to God: "Against you, and you only, have I sinned" (Psalm 51:4).
Ananias and Sapphira had lied to the believers. Peter said to Ananias: "You haven't lied to men, but to God" (Acts 5:4). The preacher asks: do we realize that sins between us are sins against God?

4. The Ordeal of the Bitter Water

Verses 11 to 31 describe what is called an ordeal: a procedure that puts the fate of an accused person into God's hands, to establish guilt or innocence.
The case is specific: a married woman whom her husband suspects of adultery, with no witness and no one caught in the act. She denies it, but the suspicion remains. The preacher speaks of a kind of "lie detector." If there were witnesses or someone caught in the act, a different law applied.
The text provides for two situations: the woman really has defiled herself, or the husband is jealous even though she has not defiled herself.
The husband brings his wife to the priest with an offering of barley flour, without oil or frankincense, an "offering of jealousy." The priest takes holy water in an earthen vessel and puts into it dust from the floor of the tabernacle.
The woman stands before Yahweh. The priest has her take an oath: if she has not gone astray, she will be declared innocent by this water; if she has defiled herself, her belly will swell and her thigh will waste away. The preacher acknowledges that we do not know exactly what this refers to; some theologians think of infertility or a miscarriage. The woman answers: "Amen! Amen!"
The priest writes the curses, washes them off into the bitter water, and has the woman drink it. If she is pure, she is declared innocent and will have children (verse 28).

5. A Law That Protected the Woman

This law seems strange today. It would not have seemed so 3,500 years ago: ordeals were common in the ancient Near East.
For the preacher, this law "would have been celebrated by women." At that time, women had few rights or none, and were regarded as property. A wicked husband could accuse his wife of adultery, send her away, or even kill her with impunity.
Here, the husband could not do whatever he wanted. He had to bring his wife to the priest and leave the problem to God, not to himself or to the tribe. The law dealt as much with the problem of adultery as with that of husbands who were too jealous or wicked.
The water was not a poison. A little dust and ink does not make a belly swell. The preacher speaks of a "placebo": a water with no active ingredient. God was not being cruel in having her drink it.
Elsewhere, ordeals were dangerous, even deadly. In the Code of Hammurabi, a Babylonian text from about 1750 BC, the suspected woman was thrown into the river: if she survived, she was innocent. In a society where few people could swim, this was cruel.
"The devil wants you to think that God is wicked," that he is hiding something from you, that he does not want your good (Genesis 3). Instead of a sexist or misogynistic God, the preacher invites us to see God's goodness: he allows the woman to be cleared and the couple to move forward. He puts an end to suspicions that can kill a marriage: "I will settle this myself."

6. God Hates Adultery and Judges It

This law also shows how much adultery is an abomination to God. In the case of someone caught in the act, the law provided for the death of both guilty parties (Deuteronomy 22:22). In the case of rape, only the man died (Deuteronomy 22:25).
"You shall not commit adultery" is the seventh commandment (Exodus 20:14). And in Malachi 2:16, God says that he hates divorce.
God judges adultery even when no one sees, even without a witness. Sin always ends up catching up with us: that is why it must be confessed to God. Today, we do not know how God will do it, but he will. Hebrews 13:4: "Let marriage be held in honor among all, and let the bed be undefiled; but God will judge the sexually immoral and adulterers."
The preacher stresses that the procedure was hard for the man too. At worst, he was responsible for the death of someone he loved. At best, he remained marked for life, in a culture of honor and shame, as someone who makes up stories. Only a husband with strong evidence, or a foolish husband, would have gone through with it.
Another remark: the Bible reports no case where this law was applied. It is never mentioned again after Numbers 5.

7. Why the Law Is Not Reciprocal

Why could the wife not bring her husband to the priest? The text does not answer explicitly, but it gives a clue: verses 19, 20, and 29 repeat that the wife is "under her husband's authority."
The preacher speaks of responsibility for another person's actions, as a parent is responsible for what his children do. A husband who has a well-founded suspicion and does nothing is not innocent. Verse 31 says that by following this law, he will be "free from iniquity." He must watch over the purity of the camp, the camp that is his family.
According to him, the Bible, which people call sexist, is more demanding of the man. After the fall, God did not call Eve first; he called out to Adam: "Where are you?" (Genesis 3:9).
He states that this has not changed in the new covenant: "the head of every man is Christ, and the head of the woman is the man" (1 Corinthians 11:3), and wives must be subject to their husbands in everything, as the Church is to Christ (Ephesians 5:24). He believes that wanting, beyond equality of worth, an equality of authority and responsibility in the couple puts a weight on the wife that does not belong to her.
To wives: do not usurp the husband's position of authority; as long as he does not use it for sin, he has the last word in case of disagreement. Do not make him pay for his decisions, otherwise he will stop deciding or become authoritarian. To husbands: "if you are applauding, you have understood nothing." The husband carries most of the responsibility and will answer first before God; he is also responsible for the children (Ephesians 6:4; 1 Timothy 3:4). He must listen to his wife's advice: "maybe your wife is smarter than you."
"If you tremble as you hear this, you are right to tremble." The task is too heavy. The only way to carry it out, without running from his responsibilities or becoming a dictator, is with Jesus, depending on him "200%," reading the Word and praying. Jesus himself withdrew at night to pray (Luke 6:12).
Jesus is also the solution for women. He is the one who invented voluntary submission: he submitted himself voluntarily to the Father.

Key Takeaways

Uncleanness is not sin, but it represents it: sin is incompatible with the presence of God, and Jesus was cast out of the camp to cleanse us.
Tolerated, unrepented sin contaminates the Church; whoever confesses and renounces sin finds grace and the help of brothers and sisters.
A sin against a brother is a sin against God: it calls for confession, restitution, and repair.
The law of the bitter water, read in its context, protected the woman from a jealous or violent husband and put the judgment in God's hands.
God hates adultery and judges it, even without a witness; but he forgives completely the one who returns to him.

Personal Application

Is there a sin in your life that you justify or tolerate, instead of confessing it and renouncing it?
Have you wronged someone without making it right? What would it take for you to confess, make restitution, and go beyond that?
What image of God do you carry when you read a difficult passage of the Old Testament: a wicked God who hides something from you, or a good God?
In your marriage or your family, how do you watch over the purity of the camp, with love and by depending on Jesus?
If you carry a hidden sin, what keeps you today from returning to God, confessing it to him, and receiving his forgiveness?

The preacher ended with a word for anyone who has committed adultery: if you confess it to God, it changes everything. He forgives you. "Go your way. From now on, sin no more" (John 8:11).

Verses Cited

Frequently Asked Questions

Why did God make some people leave the camp in Numbers 5?

The preacher gives a two-part answer. First, God's goodness: these hygiene rules protected the people from contagious diseases. Second, a lesson: uncleanness is not a sin, but it represents sin, which is incompatible with the presence of God in the middle of the camp.

What does the law of the bitter water mean in Numbers 5?

It is a procedure for a married woman suspected of adultery by her husband, with no witness and no one caught in the act. She drank, before Yahweh, water mixed with dust from the tabernacle. The preacher stresses that this water was not a poison: God himself decided the matter, which allowed an innocent woman to be declared pure and put an end to the suspicions.

Was the law of Numbers 5 unfair to women?

For the preacher, it is the opposite. In the ancient Near East, a husband could accuse, send away, or kill his wife with impunity, and other codes imposed deadly ordeals. This law required the husband to hand the matter over to God before the priest, and it allowed the innocent woman to be cleared.