Law 4 of seven, a restraint
Guard the boundaries of sex and family
This is the law modern readers arrive at with the most resistance, so it is worth being precise about what it is. It is not a law about desire and it is not a law about shame. It is a law about which relationships a home can be built on.
OneIn one sentence
There are lines around sex, and they exist so that a household can be a place a child is safe to arrive into.
uncovering nakedness
גילוי עריותGilui Arayos
Literally the uncovering of nakedness. The Hebrew phrase is the Torah's own idiom for forbidden sexual relationships, and it is built out of the language of exposure rather than the language of desire.
TwoWhere it comes from
All seven laws are read out of a single verse spoken to the first human being. This one is found in the words לֵאמֹר leimor, which mean saying, in Bereishis 2:16.
The Talmud finds this law in the word leimor, saying, in the verse spoken to the first human being, and brings a supporting verse for the reading. This is the least obvious of the seven derivations, and the Talmud treats it as requiring the extra proof.
The Rambam counts this among the seven and sets out, later in the same chapter, which relationships are included for the sons of Noach, a shorter list than the one that binds Jews.
Cited: Bereishis 2:16; Sanhedrin 56b; Rambam, Hilchos Melachim 9:1. Every reference on this site is listed in full, with its status, on the sources page.
ThreeWhat it actually asks of you
That a marriage be a boundary and not a preference.
Adultery is the centre of this law in practice. A household that can be entered by anyone is not a household, and the person who bears the cost is almost never the one who made the decision.
That the closest relationships stay outside of sex.
Incest is the other half of the law. A family is the one structure a person cannot leave and cannot consent their way out of as a child, which is why the tradition puts an absolute line there rather than a negotiable one.
That you take seriously what a home is for.
The seventh law asks you to build courts. This law asks you to protect the smaller structure that everything else rests on, and to notice that a child does not choose the room they arrive in.
FourWhat it does not ask of you
It does not say that desire is shameful.
The tradition is not ascetic about this and never has been. Bodies are not the problem in a system whose entire purpose is a dwelling in the lowest place. The law is about where, not about whether.
It does not ask you to police anyone else's household.
The law is stated to you about your own conduct. Turning it into an instrument for inspecting other people is one of the ways it gets broken.
It does not settle every question about your life from a distance.
Which relationships fall inside the seven laws, and what a person does about a past that is already complicated, are real questions with real answers, and the answers depend on facts a web page does not have. This site does not rule. Take it to a rabbi who will hear the whole situation.
It does not make your past disqualifying.
There is no entrance exam here and no record being kept against you. The tradition's position on return is unambiguous: the next act is available, always, and it counts.
FiveThe deeper layer
The deeper layer
Everything above is the plain law. What follows is the inner tradition's reading of it, and it never replaces what came first.
The Hebrew phrase is built from the verb to uncover. Not to desire, not to take. To expose something that was covered. That vocabulary is doing real work.
The account of creation places two people in a garden and describes them as unclothed and unashamed, and the shame arrives afterward, together with the knowledge of good and evil. Covering, in that account, is not a punishment. It is what appears the moment a person becomes capable of being seen by another and of being wrong.
So a law built on the word uncovering is a law about a boundary that makes closeness possible rather than one that prevents it. A wall is what allows there to be an inside. The tradition's word for the intimate space of a marriage is not a word about restriction; the household is treated as the smallest sanctuary in the world, and a sanctuary is defined by having a threshold.
SixOne practice this week
Repair one small thing at your own threshold.
This law is kept mostly in ordinary hours rather than dramatic ones. This week, do one thing that makes the household you actually live in a slightly safer place to arrive into: an apology you have been postponing, a promise kept to a child, an hour with your phone in another room.
SevenQuestions people ask
Does this law say anything about who I am attracted to?
The law is stated about acts and about relationships, not about attraction. What the seven laws include and exclude for the sons of Noach is a technical question in Jewish law with a real body of ruling behind it, and this site does not rule on it. If it matters to your life, ask a rabbi directly. You will get a straighter answer from a person than from a page, and you are entitled to one.
I am not married. Does this law apply to me?
Yes, and mostly as adultery in the other direction: not becoming the person through whom someone else's household is broken. Beyond that, the law is a description of what marriage is for, which is worth knowing before you are in one.
What if my marriage is already over in every way but the paperwork?
Then the paperwork is the question, and it is a real one, with a real procedure in Jewish law and in yours. That is a matter for a rabbi and a lawyer, not for a page. What the law says is that the boundary is not dissolved by how you feel about it.
Why is this one of only seven?
Because of what it protects. Six of the seven place a boundary around a different thing a person could consume: awe, speech, another's life, another's household, another's property, and a creature that cannot speak at all. This is the one that stands in front of the household.
This site does not rule on Jewish law and cannot answer a question about your own situation. The about page says how to find someone who can.
Where this sits
- 1Recognise the One G-d, and worship nothing else
- 2Treat the Name of G-d with reverence
- 3Do not murder
- 4Guard the boundaries of sex and family
- 5Do not steal
- 6Do not eat flesh torn from a living animal
- 7Establish courts of justice
Six restraints and one construction. Law seven is the only one that asks a society to build something, and the other six clear the ground it stands on.