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December 4, 2024
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Family and Forbidden Unions

To return the reflection of the spark of God within us, our souls must be kept untarnished.

According to the soul’s instruction manual, the Torah, certain activities, such as the consumption of certain food or the entering into certain prohibited marriages, cause the soul’s mirror to mist up and to be unable to return the divine reflection. “Do not defile yourselves with them, because it will make you spiritually insensitive. For I am God your Lord, and since I am holy, you must also make yourselves holy and remain sanctified.”

The Torah lists 21 close relatives that a man may not marry. They include, among others, one’s daughter, granddaughter, mother-in-law, aunt, daughter-in-law, the sister of one’s wife during one’s wife’s lifetime and one’s sister-in-law.

These 21 biblically forbidden marriages are each known as ervah and collectively as arayot. If one violates the prohibition against marrying an ervah, one incurs the punishment of karet, premature death at the Hand of God and the marriage is ineffective.

There are other marriages, known as chayavei la’avim, which though forbidden by the Torah do not involve the punishment of karet, and if consummated in violation of the prohibition are legally effective. Whereas the offspring of an ervah union are tainted with the personal status of a mamzer, the offspring of a chayavei la’avim union are not.

Examples of chayavei la’avim unions are marriages between a kohen gadol and a widow, between an ordinary kohen and a divorced woman, between a non-kohen and a mamzeret, and a marriage between a man and his divorced wife if she had married another man while she was divorced—machzir gerushato.

The levirate marriage, known as yibum, cannot be entered into with an ervah. The only exception to this rule is, of course, the wife of the deceased brother, provided there is no other ervah relationship other than being the sister-in-law.

Thus, for example, a father cannot enter into a levirate marriage with his daughter, even in a situation where his daughter is the widow of his late brother who died childless. This is because the positive commandment of yibum does not override the karet prohibition of marrying an ervah who is not one’s sister-in-law. With the death of her uncle who was also her husband, the widow in this daughter-niece situation is free to marry another man without having to perform yibum or chalitzah with her father.

The same is true where the widow of the childless husband is one of the other 15 arayot mentioned in the first mishnah of Yevamot. This is so because, other than the case of a sister-in-law, the death of the childless husband creates no marriage bond with the widow who is an ervah to her brother-in-law.

The levirate marriage could, however, at least biblically, be effected between the widow and the brother-in-law in the case of chayavei la’avim marriages. This is because, under biblical law, the positive commandment of yibum has the power to supersede the negative commandment of a chayavei la’avim marriage.

An example of such a situation would be where the deceased was a kohen who married a woman divorced from another man, in violation of the prohibition against a kohen marrying a divorcee. If the surviving brother, also a kohen, enters into a levirate marriage with the widow, he too would be violating the same prohibition against a kohen marrying a divorcee.

Another example of a chayavei la’avim marriage is where a man marries the widow of his deceased, childless brother after previously having performed chalitzah with her. Such a marriage violates the rule that provides that once a brother has chosen chalitzah over yibum, he may no longer marry his deceased, childless brother’s widow: keivan shelo banah, shuv lo yivneh. Yet another example of a chayavei la’avim marriage is the case of machzir gerushato discussed earlier.

In all these chayavei la’avim cases, since the prohibited marriage of the deceased was legally effective, the death of the deceased creates a zikat yibum, a marriage bond, between the widow and the surviving brother-in-law. However, in order not to perpetuate the prohibited chayavei la’avim marriage, the rabbis forbid yibum and require chalitzah.

Accordingly, in a situation where the marriage of the widow to the brother-in-law would fall into the category of chayavei la’avim, the widow cannot marry another man until she receives chalitzah from her surviving brother-in-law.


Raphael Grunfeld, a partner at the Wall Street law firm of Carter Ledyard & Milburn LLP, received smichah in Yoreh Yoreh from Mesivtha Tifereth Jerusalem of America and in Yadin Yadin from Harav Haga’on Dovid Feinstein, Zt”l. This article is an extract from Raphael’s book “Ner Eyal: A Guide to Seder Nashim, Nezikin, Kodashim, Taharot and Zerai’m” available for purchase at www.amazon.com/dp/057816731X  or by emailing Raphael at [email protected].

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