Frequently Asked Questions
Q: Why did Avraham say Sarah was his sister?
A: Avraham explained that Sarah was actually his half-sister, the daughter of his father but not his mother (Genesis 20:12). According to Rashi, Avraham did this to protect himself, as he feared people would kill him to take Sarah if they knew she was his wife. The Ramban adds that this was technically true (though misleading) since Sarah was his niece (daughter of his brother Haran), and in Torah terminology, close relatives are sometimes called 'sister.'
Q: Was it permitted for Avraham to marry his sister?
A: No, marrying one's sister was already forbidden according to Torah law (Leviticus 18:9). The Talmud (Sanhedrin 58b) explains that Avraham observed all the commandments even before they were given at Sinai. However, Rashi notes that this marriage occurred before the Torah was given at Mount Sinai, and Sarah was actually his niece (called 'sister' colloquially), which would later be permitted.
Q: What lesson can we learn from Avraham calling Sarah his sister?
A: The Midrash teaches that this episode shows Avraham's wisdom in dealing with potentially dangerous situations while maintaining truthfulness. Though he presented a partial truth (calling Sarah his sister), he did so to preserve life (pikuach nefesh). However, Jewish ethics emphasize complete honesty, and later commentators discuss the complexities of this situation.
Q: How could Sarah be both Avraham's wife and sister?
A: As Rashi explains based on Genesis 11:29, Sarah was actually the daughter of Haran, Avraham's brother, making her his niece. In biblical Hebrew, close relatives are sometimes called 'sister' (as in Genesis 13:8 where Lot is called 'brother'). The verse specifies she wasn't the daughter of his mother, showing this was a more distant relation than a full sister.
Q: Why is this story about Avraham and Sarah important?
A: This narrative teaches important lessons about Jewish values: (1) The sanctity of marriage (as Avraham and Sarah remained devoted), (2) The importance of truthfulness while dealing wisely with danger, and (3) Divine protection (as Hashem intervened to protect Sarah). The Talmud (Bava Batra 16a) also derives from here that Sarah was exceptionally beautiful even in old age.
Context of the Verse
This verse (Genesis 20:12) is part of Avraham Avinu's explanation to Avimelech, king of Gerar, regarding his relationship with Sarah. Avraham clarifies that Sarah is both his wife and his sister, as she is the daughter of his father but not his mother. This statement requires careful analysis to understand the familial relationships and halachic implications.
Rashi's Explanation
Rashi (Genesis 20:12) explains that Sarah was the daughter of Haran, Avraham's brother, making her Avraham's niece. However, since Haran was the son of Terach (Avraham's father), Sarah was considered "the daughter of my father" in a broader sense—descended from Terach but not from Avraham's mother. This clarifies why Avraham referred to her as his sister.
Halachic Perspective
The Rambam (Hilchos Issurei Biah 2:14) discusses the prohibition of marrying one's sister, whether from the same father and mother or from just one parent. However, Avraham's marriage to Sarah was permissible because:
Midrashic Insights
The Midrash (Bereishis Rabbah 41:8) elaborates that Sarah was actually Terach's daughter from a different wife, making her Avraham's half-sister. This aligns with Avraham's statement that she was "the daughter of my father but not the daughter of my mother." The Midrash emphasizes that Avraham was careful with his words to avoid deception.
Moral and Ethical Lessons
Avraham's clarification to Avimelech teaches the importance of honesty, even in difficult situations. Though he initially withheld the full truth to protect Sarah (as seen in Genesis 20:11-13), he ultimately clarified the relationship to avoid any misunderstanding. This reflects the principle of darkhei shalom (ways of peace) and proper conduct between nations.