Truth and Lies in the Jewish Tradition

Jewish moralist literature sets a high standard of truthtelling, but one not without exceptions.

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Deceiving others is strictly forbidden: “The Holy One, blessed be He, hates a person which says one thing with his mouth and another in his heart” ([Babylonian Talmud] Pesahim 113b). Defrauding by the seller overcharging or the buyer [underpaying] is condemned, and the Mishnah (Bava Metzia 4:10) states: “As there is wronging in buying and selling, there is wronging with words. A man must not ask: ‘How much is this thing?” if he has no intention of buying it.”

The fourteenth-century moralist, Isaac Aboab, in his Menorat Ha-Ma’or (“Candelabrum of Light”) gives what is no doubt in part a counsel of perfection; yet many Jews, aware of the severe demands he makes, did try to live up to them, judging by the frequency with which the work is referred to in the literature of Jewish piety. Aboab writes:

There are other matters which fall under the heading of falsehood; for example, when a man praises himself for having virtues he does not really possess. It sometimes happens that a man may persuade his friend into believing that he has spoken well of him or done him a good turn when, if fact, he has done nothing of the kind. In this connection our Rabbis teach that it is forbidden to mislead others even if they are heathens. Another example is one who promises to do something for his neighbor and fails to carry out his promise. All this is to fulfill the verse: “The remnant of Israel shall not do iniquity, nor speak lies, neither shall a deceitful tongue be found in their mouth” [Zechariah 3:13].

The meaning is that even where nothing iniquitous is involved, they shall not have a deceitful tongue in their mouth but all their words should be truthful. Some liars mislead their neighbors into believing that they are friends, who have their welfare at heart, but their real purpose is only to win their neighbor’s confidence so as to be able to harm him. Of those it is said: “One speaketh peaceably to his neighbor with his mouth, but in his heart he layeth his wait for him” [Jeremiah 9:8]. The verse goes on to say: “Shall I not punish them for these things? saith the Lord; shall not My soul be avenged on such a nation as this?”

Other liars have their eyes on future benefits and tell lies in order to persuade their neighbors to give them gifts. Other liars mislead their neighbors by telling lies so as to obtain something of value from them or from others so that they can steal it for themselves. The Rabbis compare this to idolatry for this is precisely what the idolaters do when they pretend that their gods have power.

Yet, for all the high value it attaches to truthfulness, the Jewish tradition is sufficiently realistic to acknowledge that there are occasions when the telling of a “white lie” can be in order; for instance, where the intention is to promote peace and harmony ([Babylonian Talmud] Yevamot85b). The [Babylonian] Talmud (Bava Metzia 23b-24a) observes that a scholar will never tell a lie except in three instances of “tractate,” purya, and “hospitality.” The commentators explain “tractate” to mean that a modest scholar is allowed to declare that he is unfamiliar with a tractate of the Mishnah in order not to parade his learning. Rashi translates purya as “bed” and understands it to mean that if a scholar is asked intimate questions regarding his marital life he need not answer truthfully. The Tosafot [authorities of a certain later school, commenting on Rashi’s comments] find it hard to believe that such questions would be addressed to the scholar or anyone else and they understand purya to be connected with the festival of Purim. If the scholar is asked whether he was drunk on Purim, he is allowed to tell a lie about it. “Hospitality” is understood to mean that a man who has been treated generously by his host may decide not to tell the truth about his reception if he fears that as a result the host will be embarrassed by unwelcome guests.

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Rabbi Louis Jacobs

Rabbi Dr. Louis Jacobs (1920-2006) was a Masorti rabbi, the first leader of Masorti Judaism (also known as Conservative Judaism) in the United Kingdom, and a leading writer and thinker on Judaism.