Usure

The raw material of the subject is scriptural. Three passages from the Torah establish the prohibition. The Book of Exodus (22, 24) commands not to act as a creditor demanding interest from the poor of the people. Leviticus (25, 35-37) enjoins supporting the impoverished brother "without taking from him either interest or profit," linking it to the sabbatical year and the jubilee. Deuteronomy (23, 20-21) finally formulates the cardinal distinction: one shall not lend at interest to one's brother — "neither money, nor food, nor anything that may be lent at interest" — but one may do so to the stranger [Torah, Deuteronomy 23; Leviticus 25].

The Hebrew vocabulary distinguishes two terms that rabbinic tradition would eventually assimilate. Neshekh evokes the bite of interest that gnaws at the borrower, while tarbit or marbit designates the gain of increase from the perspective of the lender [Encyclopaedia Judaica, article "Usury"]. The prophets take up the prohibition as a criterion of justice: Ezekiel (18, 8-13) ranks the lender at interest among men of blood, and Psalm 15 reserves presence on the holy mountain to one who "lends not his money at usury." Usury is therefore not, in the biblical world, a mere commercial rule: it is a marker of holiness and solidarity within the covenant.

The Talmud transformed the biblical prohibition into a legal system of extraordinary precision. The tractate Bava Metsia, particularly its fifth and sixth chapters, constitutes the heart of this reflection. The sages distinguished there between ribbit qetsutsa, the interest fixed in advance and explicitly prohibited by the Torah, and avaq ribbit, literally the "dust of interest" — the indirect, allusive, or deferred forms of gain, forbidden by rabbinic ordinance [Babylonian Talmud, tractate Bava Metsia].

This casuistry aimed to close all hidden loopholes: gifts offered by the borrower, respectful greeting that he would not have previously addressed, benefits in kind, disguised discount. The rabbis even forbade the borrower to pay in advance or to inform the lender of good news that might have passed for moral interest. They extended the prohibition to commodities: selling on credit a commodity more expensive than for cash already amounted to ribbit. This rigor explains the apparent historical contradiction — a people whose law severely condemned interest became, in the European imagination, the lender par excellence. The resolution of this paradox unfolds in medieval history and in the legal ingenuity of the heter iska which we shall encounter again.

The great reversal occurred in Europe during the eleventh to thirteenth centuries. The Church, drawing on Deuteronomy and the Church Fathers, forbade Christians from lending money at interest to one another, deeming it contrary to charity. Yet the nascent urban economy, trade fairs, military campaigns, and the needs of princes all demanded credit. Progressively excluded from land ownership, artisanal guilds, and many professions, Jews found themselves, by default, directed toward the money trade — a role that the biblical clause authorizing loans to foreigners rendered lawful on their side [Encyclopaedia Judaica, article "Moneylending"].

This convergence produced an ambiguous and dangerous situation. The Jews of Venice, studied by historians of the Annales, lent on pledge under conditions strictly regulated by the Serenissima, which set rates and supervised the banchi [Reinhold Mueller et alii, Parisian studies on Jewish lenders of Venice]. The Jewish lender was both indispensable and hated: useful to the prince who taxed his profits, exposed to popular fury during crises. This position served as fertile ground for a durable economic anti-Judaism, of which the figure of Shylock, forged by Shakespeare, remains the literary echo. The archival record here nuances the legend: far from dominating finance, most Jewish lenders operated on a small scale, under surveillance, and were as often victims of princely payment defaults as beneficiaries of the system.

Faced with economic necessity, decision-makers did not circumvent the prohibition: they reconfigured it. The central instrument was the heter iska (היתר עיסקא), "business authorization," a contractual arrangement that requalifies the loan as an investment partnership. Rather than being a creditor collecting interest, the money lender becomes a partner sharing the profits and, theoretically, the losses of the funded enterprise [Talmudic Study on Lending at Interest (Ribit) and Heter Iska, site of Jewish studies].

The mechanism rests on a dual share: one fraction of the funds is treated as a deposit, the other as a loan, and the return is presented as the investor's share of profit. Rigorous rules of proof — oaths and testimony requirements difficult to assemble — render in practice the payment of the expected return nearly automatic, while respecting the letter of the law. Formalized in the modern era and systematized in the Ashkenazi world, the heter iska allowed Jewish financial institutions, up to contemporary Israeli banks, to operate without transgressing ribbit. It illustrates the particular genius of halakha: keeping the principle intact while making it livable, through the path of contract rather than through exception.

The word deserves a closer look, for its history condenses that of the concept. The Latin usura meant the use of a lent sum, hence the rental of money, without initial pejorative connotation. Roman law distinguished the capital, sors, from its interest, usurae. Over the course of the Christian Middle Ages, under pressure from canonical doctrine which condemned any gain derived from the mere passage of time — a time that « belongs to God alone » according to the scholastic formula — usura came to designate the very fault of lending at interest.

It was only with the gradual legalization of credit, from the sixteenth to the eighteenth century, that French language separated two notions: the licit « intérêt », capped by law, and « usure » become synonymous with abusive interest, exceeding the legal rate. The onomastic shift reflects a moral revolution: what was condemned wholesale was gradually tolerated, regulated, then normalized, the word « usure » retaining only residual negative charge. The dual Hebrew sense, neshekh the bite and tarbit the increase, had sensed from the outset this tension between legitimate gain and predation.

The emancipation of Western Jews in the eighteenth and nineteenth centuries opened up professions long forbidden and shifted the debate. A few great houses — the Rothschild family foremost among them — rose to high finance and became, despite themselves, the target of renewed economic antisemitism that recycled the old medieval grievance of usury. Late nineteenth-century and 1930s propaganda made the "Jewish usurer" a deadly stereotype, even as sociological reality showed a population that was mostly modest, often artisanal or peddling [Encyclopaedia Judaica, article "Usury"].

In parallel, internal Jewish thought pursued its ethical reflection. The gemakhim — free-loan funds stemming from guemilut hassadim, the practice of loving-kindness — perpetuated the biblical ideal of interest-free lending to the needy brother. Nascent Zionism and the economy of the yishouv, then of the State of Israel, made massive recourse to heter iska to reconcile modern banking systems with halakhic fidelity. The subject of usury thus remains alive: it articulates a thousand-year-old prohibition, a history of stigmatization, and a casuistry still active in contemporary finance.

This theme being not a family lineage but an object of history and law, its "figures" are the decision-makers, thinkers and actors who shaped its treatment. They are named here with the reservations that the documentation imposes.

Rashi of Troyes (1040–1105), Rabbi Shelomo Yitshaqi — The greatest medieval commentator on the Bible and Talmud, active in Champagne, lived in a region where Jews already practiced pawning. His glosses on the tractate Bava Metsia durably illuminated the laws of ribbit, distinguishing prohibited interest from its indirect forms. His work remains the obligatory gateway to any talmudic study of usury [Encyclopaedia Judaica, article "Rashi"].

Moses Maimonides (1138–1204), Moshe ben Maïmon, the Rambam — Physician, philosopher and codifier born in Cordova, died in Cairo, he systematized the laws of lending at interest in his Mishneh Torah, in the Hilkhot Malvé ve-Lové (laws of lender and borrower). There he hierarchized the degrees of transgression and recalled the supreme value of interest-free lending, which he ranked among the highest forms of charity [Maimonides, Mishneh Torah].

Rabbi Joseph Caro (1488–1575), Yosef ben Ephraïm Karo — Author of the Shulhan Arukh, the reference code of halakha, exiled from Spain and settled in Safed. His section Yoré Dea codifies in detail the laws of ribbit that still carry authority. His work fixed the framework within which the heter iska was subsequently elaborated [Joseph Caro, Shulhan Arukh, Yoré Dea].

William Shakespeare (1564–1616) — Not an actor in Jewish history, but an artisan of its representation. His Merchant of Venice (c. 1596-1598) crystallized, through the character of Shylock, the European imaginary of the Jewish lender and usury. This work weighs upon the history of the perception of the subject, independent of any sociological truthfulness.

Mayer Amschel Rothschild (1744–1812) — Founder, in Frankfurt, of the banking dynasty that embodied the entry of emancipated Jews into European high finance. Starting from a modest trade in ancient coins, he built an international credit network. His success fed both admiration and the resurgence of the antisemitic stereotype of usury [Encyclopaedia Judaica, article "Rothschild"].

Usury is not a marginal history of Judaism: it illuminates, in negative, the theology of covenant, exile and the relationship to money. From the bite of biblical neshekh to the casuistry of talmudic ribbit, the Jewish tradition first condemned interest as an assault on brotherhood. It was Christian Europe that, by forbidding credit to its faithful while excluding Jews from other trades, assigned them a role it then stigmatized with murderous consistency. The paradox lies entirely there: the people whose law most severely repudiated usury became, in the imagination, its symbol.

The ingenuity of heter iska finally shows that halakha knew neither flight nor denial, but the transformation of the loan into partnership, of the creditor into associate. Between the ideal of the gemakh, the free loan offered to one's brother, and the necessity of credit in a complex economy, Jewish thought held both ends of the same chain. Usury thus remains a mirror: it reflects the way a civilization thinks about time, debt and justice.