Conversion Is Not About Halacha

As the Israeli Chief Rabbinate and the new rabbinical initiative for an independent conversion court (which I fully support) are headed toward a major showdown, it is remarkable that neither side has considered a most crucial question: Is conversion even possible? This may sound like a rhetorical question, since the answer is in the affirmative. Yet it goes to the very core of the problem. And as long as we do not deal with it, all deliberations concerning this matter are more or less meaningless. The reason for this is very obvious: Logically speaking, conversion to Judaism should be impossible. Just as a Jew cannot become a kohein (priest) if his father is not one, so a gentile should be unable to become a Jew. Either one is born into a family of kohanim, or one is not. Similarly, either one is born into the nation of Jews, or one is not. God chose the Patriarchs and their descendants as His people and it is only they who can claim to be Jews.

And yet, conversion to Judaism is possible! How is that? Philosopher Michael Wyschogrod gave a remarkable answer to this problem: By means of a miracle. (1) A gentile who converts to Judaism miraculously becomes part of the People of Israel. Unlike in the case of Christianity, this does not just mean that the gentile now shares the beliefs of Judaism, but that he or she literally becomes the seed of the Patriarchs and Matriarchs. For this to happen, a quasi biological miracle is required. The gentile must be reborn as a direct descendant of Avraham and Sarah. This is accomplished by immersion in a mikvah (ritual bath), clearly symbolizing the mother’s womb. The proof of this far-reaching conclusion is that, according to the Torah, a convert is allowed to marry his or her own mother, father, brother or sister if they are Jewish as well. This is totally unprecedented and seems to defy all logic and violate all biological evidence. How can one undo the undeniable biological fact that the child has natural parents? Still, this is exactly what the Torah does. It was the Rabbis who forbade converts to marry their own parent, brother or sister, fearing that people might claim the gentile gave up a stricter religion for one with more lenient rules of sanctity. (2) But the fact that such marriages are Rabbinically forbidden does not change the fact that they are biblically permitted.

This is radically different from baptism in Christianity. After baptism, the prohibition of incest is not waived. The biological relationship between parents and the baptized person continues as before. Not so in Judaism, which requires the total rebirth of a person – to the extent that earlier biological relationships are completely severed. (Still, one is obligated to give full respect to one’s biological parents as an expression of hakarat hatov [gratitude], a most important element of Jewish ethical teachings.)

Moreover, simply immersing oneself in a mikvah is not sufficient. It is crucial that the potential convert desire to take on a new identity. Human beings are not just masses of plasma, sophisticated robots, or creative animals. They cannot change their fundamental selves simply by physical immersion in a well of water. They are souls with deep emotions, who experience spiritual and moral struggles in which religious belief plays a critical role. Therefore, conversion should be a momentous decision rooted in the deepest recesses of the human soul. While this clearly includes the desire to become a part of the Jewish people, it would be a major mistake to argue that mere immersion in a mikvah actually causes this highly spiritual change of identity. At the very minimum, the convert must identify at least partially with his new nationality and its history, culture and religion.

One can immerse in a mikvah hundreds of times and still remain a gentile if the act is not accompanied by some kind of spiritual transformation, or change in identity, through which one becomes part of the Jewish people, with a deep commitment to Jewish life.

Whether or not this transformation requires a full commitment to Halacha is open to debate. Already in the Talmud several approaches are mentioned – some more stringent, others more lenient. (3) In the past, both had merits and could be applied. This, however, is no longer the case in modern Israel. A new halachic challenge has emerged: the need to ensure that the State of Israel will not be undermined by massive assimilation caused by the arrival of more than 300,000 Russians of Jewish descent, who are not Jewish according to Halacha and are now marrying halachically Jewish Israelis. It is not so much the unity of the Jewish people that is at stake but the survival of the State of Israel as a Jewish state, whatever the exact definition of “Jewish” may be. It is this matter that makes the debate so vital and far-reaching. A new balance must be found between the need for survival on one hand and traditional halachic standards, whether strict or lenient, on the other.

We have to make sure that the integrity of Judaism and its mission to the world is secured while paradoxically guaranteeing that we have as many non-Jews of Jewish descent joining our people and Judaism, even if many of them will not live a full halachic life after they have converted.

This will require an entirely new approach, which our conventional codifications do not offer. Most important, merely insisting on full or partial commitment to Halacha will not be the solution to this problem. What is needed is a deep emotional commitment and understanding of the existential meaning of Jewishness. Even full observance of Halacha alone does not make a person Jewish. It is only part of the process. We must convince potential converts of the Jewish people’s uniqueness and of its highly unusual and paradoxical place in this world.

It will be necessary to initiate and develop programs for new converts, which will not emphasize the need for halachic commitment but which will first of all create within the candidates a warm and deeply emotional feeling of what it means to be a Jew; to belong to an unprecedented entity. We will want to make them realize that being Jewish is the greatest privilege a person can have; that they have become part of a nation that has defied the rules of history and remained alive when all other nations would have succumbed; and that this was possible because of a mind-boggling idea called Judaism, which turned the world on its head and has affected all of mankind in ways that we are as yet unable to fully grasp.

This Judaism consists of more than just halachic rules and observance. It is a guide to living in a spiritual order of such compelling nobility and power that it becomes totally irresistible and makes Jews indispensable. Halachic commitment must follow from this premise. It should be the end result, not its point of departure. Once the candidates are taken in by this vision and feel a deep emotional connection to the Jewish people, they become ready to convert even if their halachic commitment is still weak.

Let’s stop talking about Halacha until the convert’s longing for it becomes irresistible.


(1) See his excellent work: The Body of Faith: God in the People Israel (Northvale, NJ: Jason Aronson Inc., 1996) pp. XVI-XX.

(2) See Yevamot 22a. This seems to oppose the rule ( Kiddushin 78a; and Maimonides, Mishneh Torah: Forbidden Relations 18:3) that a kohein cannot marry a convert since she may have had sexual relations before she converted. It may be that this ruling came from a different Talmudic tradition, or that the Rabbis just felt that a woman who had a sexual experience outside the Jewish covenant was emotionally not suitable to the life of a priest.

(3) Bechorot 30b; Yebamot 47 a-b. 

About the Author
Rabbi Dr. Nathan Lopes Cardozo is the Founder and Dean of the David Cardozo Academy and the Bet Midrash of Avraham Avinu in Jerusalem. A sought-after lecturer on the international stage for both Jewish and non-Jewish audiences, Rabbi Cardozo is the author of 13 books and numerous articles in both English and Hebrew. Rabbi Cardozo heads a Think Tank focused on finding new Halachic and philosophical approaches to dealing with the crisis of religion and identity amongst Jews and the Jewish State of Israel. Hailing from the Netherlands, Rabbi Cardozo is known for his original and often fearlessly controversial insights into Judaism. His ideas are widely debated on an international level on social media, blogs, books and other forums.
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