Frequently Asked Questions
Q: What does Leviticus 18:8 mean?
A: Leviticus 18:8 prohibits uncovering the 'nakedness' (a biblical term for intimate relations) of one's father's wife, meaning a stepmother or any wife of one's father (even if not one's biological mother). The Torah considers this act as uncovering 'thy father’s nakedness,' emphasizing the severity of this prohibition. Rashi explains that this applies whether the father is still married to her or even after divorce or the father's death (unless there was a formal halachic divorce before the father's death).
Q: Why is this prohibition important in Judaism?
A: This prohibition is part of the Torah's laws of forbidden relationships (איסורי עריות), which form the foundation of Jewish family purity and moral boundaries. The Rambam (Hilchot Issurei Bi'ah 1:1) counts this as one of the 365 negative commandments. Violating it is considered a grave sin, as it disrupts family sanctity and societal order. The Talmud (Sanhedrin 54a) discusses the severity of this prohibition, equating it to a form of incest.
Q: Does this verse apply to a biological mother or just a stepmother?
A: This verse specifically refers to a father's wife who is not one's biological mother (i.e., a stepmother). Relations with one's biological mother are already prohibited under a separate commandment (Leviticus 18:7). Rashi clarifies that the term 'father’s wife' includes any woman who is or was married to one's father, whether she is the mother of one's siblings or not.
Q: How does this law apply in Jewish life today?
A: This prohibition remains fully binding today according to Halacha (Jewish law). Even after a father's death or divorce, one may not marry or have relations with a former stepmother. The Shulchan Aruch (Even HaEzer 15:1) codifies this as a permanent prohibition. This law underscores the Torah's emphasis on maintaining clear and respectful boundaries within family relationships.
Q: What is the deeper lesson behind this commandment?
A: Beyond the literal prohibition, our sages teach that this commandment upholds the sanctity of the family unit. The Sefer HaChinuch (Mitzvah 188) explains that such boundaries prevent jealousy and conflict within families. The Midrash (Vayikra Rabbah 23:9) also connects this to maintaining proper respect for one's father, as violating this commandment dishonors him. It teaches us to channel intimate relationships only through holy and permitted paths.
Prohibition Against Uncovering the Nakedness of a Father's Wife
The verse (Vayikra 18:8) states: "The nakedness of thy father’s wife shalt thou not uncover: it is thy father’s nakedness." This prohibition is one of the arayot</em (forbidden sexual relations) listed in the Torah and is considered a severe transgression.
Explanation of the Prohibition
Rashi explains that this verse refers to a man's stepmother—his father's wife, whether she is his biological mother or not. The phrase "it is thy father’s nakedness" emphasizes that this relationship is intrinsically tied to the honor of one's father, and violating it is akin to dishonoring him.
Broader Implications in Halacha
The Sefer HaChinuch (Mitzvah 188) elaborates that this prohibition serves to uphold the sanctity of family structure and prevent moral corruption. By forbidding relations with a father's wife, the Torah safeguards the respect due to a parent and maintains proper boundaries within the household.
Midrashic Insight
The Midrash Tanchuma (Kedoshim 10) connects this prohibition to the story of Reuven (Bereishit 35:22), who was criticized for interfering with his father Yaakov's marital arrangements. Though Reuven's exact transgression is debated, some interpretations suggest it serves as a cautionary tale about the severity of violating familial boundaries.