Forbidden relationships in Judaism

forbidden relationshipsArayotforbiddengilui arayotNot to have sexual relations with your motherprohibited marriagesrelationshipwomen he is forbidden to marry
Forbidden relationships in Judaism (איסורי ביאה Isurey bi'ah) are those intimate relationships which are forbidden by prohibitions in the Torah and also by rabbinical injunctions.wikipedia
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Jewish views on incest

incestIncestuous relationsLevitical Degrees
Though they are generally called incestuous relations, the biblical list does not necessarily correspond to those prohibited under state laws.
The term mostly used by rabbinic sources is "forbidden relationships in Judaism."

Mamzer

bastardmamzerimmamzerut
A mamzer in Jewish law is a child resulting from an incestuous liaison or an adulterous liaison by a married woman.
In the Hebrew Bible and Jewish religious law, a mamzer (, lit. "estranged person") is a person born from certain forbidden relationships or from incest (as defined by the Bible), or the descendant of such a person.

Pikuach nefesh

generally required to transgress the commandment when a life is on the linelife and deathmandates
) This is as opposed to most other prohibitions, in which one is generally required to transgress the commandment when a life is on the line.

Niddah

family puritymenstruationritual purity
A man is not allowed to have sexual relations with a woman - including his wife - during and after her menstrual period, until after she undergoes the proper cleansing procedures in a mikveh.
As with most forbidden relationships in Judaism, all physical contact in an affectionate or lustful manner is rabbinically forbidden when a woman is in her niddah status.

Yibbum

levirate marriageDeuteronomy 25Yibum

Qahal

KahalJewish communitykehilla
The Bible excludes certain categories of people from taking part in the qahal (assembly) of Hashem.

Torah

PentateuchLawWritten Torah
Forbidden relationships in Judaism (איסורי ביאה Isurey bi'ah) are those intimate relationships which are forbidden by prohibitions in the Torah and also by rabbinical injunctions.

Rabbinic Judaism

rabbinicrabbinicalRabbinical Judaism
Forbidden relationships in Judaism (איסורי ביאה Isurey bi'ah) are those intimate relationships which are forbidden by prohibitions in the Torah and also by rabbinical injunctions.

Leviticus 18

18forbidden sexual relationsLev. 18
Some of these prohibitions—those listed in Leviticus 18, known as —are considered such a serious transgression of Jewish law that one must give up one's life rather than transgress one of them.

Aveira

aveirahforbiddenprohibitions
) This is as opposed to most other prohibitions, in which one is generally required to transgress the commandment when a life is on the line.

Adultery

adulterousaffairadulterer
Adultery is prohibited by the seventh of the Ten Commandments which says simply:

Mikveh

mikvahritual bathritual baths
A man is not allowed to have sexual relations with a woman - including his wife - during and after her menstrual period, until after she undergoes the proper cleansing procedures in a mikveh.

Sister

Daughter

Stepchild

Aunt

great-auntgrandauntpaternal aunt

Brother

Brothersbro(twin brother)