What Does the Quran Say About Multiple Wives: A Three-Faith Comparison

The Hebrew Bible doesn't flatly prohibit polygamy, and several passages presuppose it as a social reality. Deuteronomy 21:15 begins, 'If a man have two wives, one beloved, and another hated' Deuteronomy 21:15, and proceeds to regulate inheritance rights — treating the arrangement as legally recognized rather than morally condemned. Similarly, Exodus 21:10 requires that if a man takes another wife, he must not diminish the first wife's food, clothing, or conjugal rights Exodus 21:10, again regulating rather than forbidding the practice.

The Torah does place limits, however. Deuteronomy 17:17 warns that a king 'shall not multiply wives to himself, that his heart turn not away' Deuteronomy 17:17, and Leviticus 18:18 prohibits marrying a wife's sister during the wife's lifetime Leviticus 18:18. These restrictions suggest the tradition was aware of the relational dangers of polygamy even while permitting it. The scholar Louis Epstein, writing in 1942, documented that polygamy was practiced among Ashkenazi Jews well into the medieval period. Rabbi Gershom ben Judah's famous enactment (c. 1000 CE) effectively banned polygamy for Ashkenazi Jews, though Sephardic communities continued the practice longer. Today, polygamy is prohibited by Israeli civil law and is not practiced in mainstream Jewish communities worldwide.

Christianity moved toward strict monogamy earlier and more decisively than the other two Abrahamic faiths. Paul's instruction in 1 Corinthians 7:2 is foundational: 'to avoid fornication, let every man have his own wife, and let every woman have her own husband' 1 Corinthians 7:2 — the singular 'wife' and 'husband' being theologically significant to most Christian interpreters. Romans 7:3 reinforces this by stating that a woman who joins herself to another man while her husband lives 'shall be called an adulteress' Romans 7:3, establishing a framework of exclusive marital fidelity.

Patristic writers like Augustine of Hippo (354–430 CE) acknowledged that the Old Testament patriarchs practiced polygamy but argued it was permitted under a prior dispensation and is no longer valid under the New Covenant. The Protestant Reformers, including Luther and Calvin in the 16th century, largely agreed, though Luther controversially granted a private dispensation to Philip of Hesse in 1540 — a decision he later regretted. Today, virtually all mainstream Christian denominations — Catholic, Orthodox, and Protestant — categorically forbid polygamy, and it is considered grounds for church discipline in most traditions.

The Quran is the only scripture among the three Abrahamic texts to explicitly and conditionally permit polygyny in direct legislative language. Surah An-Nisa (4:3) states: 'And if you fear that you will not deal justly with the orphan girls, then marry those that please you of women, two or three or four. But if you fear that you will not be just, then marry only one.' This verse is the cornerstone of Islamic polygamy law and is understood by classical scholars — including al-Tabari (839–923 CE) and Ibn Kathir (1301–1373 CE) — as a permission bounded by a demanding condition of absolute equal treatment among wives.

The same surah later states (4:129): 'And you will never be able to be equal between wives, even if you should strive to do so' — a verse that some modern Muslim scholars, such as Fazlur Rahman (1919–1988), argue effectively makes polygamy functionally impermissible by setting an impossible standard. The Quran also prohibits marrying two sisters simultaneously, echoing Leviticus 18:18's concern Leviticus 18:18. The Hebrew Bible's provision in Exodus 21:10 — that a man must not reduce a first wife's rights upon taking another Exodus 21:10 — finds a clear parallel in Islamic fiqh, which requires equal provision of housing, time, and financial support for each wife. Several Muslim-majority countries, including Tunisia and Turkey, have legally banned polygamy, while others regulate it through court approval requirements.