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Commandment #150 · Positive · Social & Ethical Laws

Just Balances, Just Weights: Honest Measures

מִשְׁקָלוֹת וּמִדּוֹת
Source: Leviticus 19:35  ·  Maimonides, Sefer HaMitzvot, Positive #150

Leviticus 19 closes a chapter of ethical commands — love your neighbor, do not steal, judge righteously — with two short verses about something almost mundane: scales and measuring cups. 'Ye shall do no unrighteousness in judgment, in meteyard, in weight, or in measure' (Leviticus 19:35), and 'just balances, just weights, a just ephah, and a just hin, shall ye have: I am the LORD your God, which brought you out of the land of Egypt' (Leviticus 19:36). Proverbs 11:1 calls a rigged scale 'abomination to the LORD,' Amos 8:5 catches merchants 'making the ephah small, and the shekel great,' and Genesis 23:16 shows Abraham, generations earlier, weighing out payment to Ephron honestly, in full view of witnesses, before this law was ever given (Genesis 23:16).

Ye Shall Do No Unrighteousness

לֹא תַעֲשׂוּ עָוֶל בַּמִּשְׁפָּט בַּמִּדָּה בַּמִּשְׁקָל וּבַמְּשׂוּרָה
"Ye shall do no unrighteousness in judgment, in meteyard, in weight, or in measure."
מֹאזְנֵי צֶדֶק אַבְנֵי צֶדֶק אֵיפַת צֶדֶק וְהִין צֶדֶק יִהְיֶה לָכֶם אֲנִי יְהוָה אֱלֹהֵיכֶם אֲשֶׁר הוֹצֵאתִי אֶתְכֶם מֵאֶרֶץ מִצְרָיִם
"Just balances, just weights, a just ephah, and a just hin, shall ye have: I am the LORD your God, which brought you out of the land of Egypt."

Leviticus 19:35 sits in a chapter that includes 'love thy neighbour as thyself' (Leviticus 19:18) and 'thou shalt not steal' (Leviticus 19:11) — and places honest commerce in the same category. The word for 'unrighteousness' here is the same word used elsewhere for corrupt judgment in court. A rigged balance, the verse implies, is a form of court corruption that never has to go before a judge — the customer is the only witness, and the customer rarely knows.

Leviticus 19:36 then grounds the command in the most basic fact of Israel's own history: 'I am the LORD your God, which brought you out of the land of Egypt.' Israel had been a nation of slaves, their labor taken without fair return. The motive clause ties honest weights directly to that memory — a people who know what it is to be cheated must not become, in their own marketplaces, the ones doing the cheating.

Abomination to the LORD... His Delight

מֹאזְנֵי מִרְמָה תּוֹעֲבַת יְהוָה וְאֶבֶן שְׁלֵמָה רְצוֹנוֹ
"A false balance is abomination to the LORD: but a just weight is his delight."

Proverbs 11:1 takes the same subject and raises the stakes: 'A false balance is abomination to the LORD: but a just weight is his delight.' 'Abomination' is strong language — the word used elsewhere for idolatry and for the gravest sexual sins. Applied here to a scale that has been quietly tampered with, it makes a claim that commercial honesty is not a side issue of civil regulation, but something that touches God's own pleasure and displeasure directly.

Making the Ephah Small, and the Shekel Great

לֵאמֹר מָתַי יַעֲבֹר הַחֹדֶשׁ וְנַשְׁבִּירָה שֶּׁבֶר וְהַשַּׁבָּת וְנִפְתְּחָה בָּר לְהַקְטִין אֵיפָה וּלְהַגְדִּיל שֶׁקֶל וּלְעַוֵּת מֹאזְנֵי מִרְמָה
"Saying, When will the new moon be gone, that we may sell corn? and the sabbath, that we may set forth wheat, making the ephah small, and the shekel great, and falsifying the balances by deceit?"

Amos 8:5 catches the violation in the act. The prophet describes merchants who can barely wait for a holy day to end: 'When will the new moon be gone, that we may sell corn? and the sabbath, that we may set forth wheat' — and what they do the moment it ends is 'making the ephah small, and the shekel great, and falsifying the balances by deceit.' The fraud runs in both directions at once: the ephah (what the customer receives) is shrunk, while the shekel (what the customer pays) is inflated — cheating on both ends of the same sale.

What makes Amos 8:5 sting is the religious observance surrounding it. These are people who outwardly keep the Sabbath — they are 'waiting' for it to be over — while treating it as an interruption to fraud rather than evidence against it. Leviticus 19:36's foundation in the Exodus, a redemption from exploitation, has been inverted: religious observance on one day, exploitation the moment it ends. Generations earlier, Abraham had modeled the opposite. Buying a burial site for Sarah, he 'weighed to Ephron the silver, which he had named in the audience of the sons of Heth, four hundred shekels of silver, current money with the merchants' (Genesis 23:16) — an open, witnessed, full-price transaction, the exact opposite of a thumb quietly pressed on a scale.

Key Figures

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Abraham
Generations before Leviticus 19:35-36 was given, Abraham 'weighed to Ephron the silver... four hundred shekels of silver, current money with the merchants' (Gen 23:16) — an open, witnessed, full-price transaction for Sarah's burial site, modeling the honest commerce the law would one day require.
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Amos
Centuries later, the prophet Amos confronted merchants who treated the Sabbath as an interruption to be endured before returning to 'making the ephah small, and the shekel great, and falsifying the balances by deceit' (Amos 8:5) — the exact 'unrighteousness in judgment, in meteyard, in weight, or in measure' that Leviticus 19:35 forbids.

Study Questions

For reflection and group study
What does Leviticus 19:35 forbid, and what other kinds of commands does it sit alongside in Leviticus 19?
Why does Leviticus 19:36 ground the command for 'just balances, just weights' in the memory of the Exodus from Egypt?
What does Proverbs 11:1 mean by calling a false balance an 'abomination to the LORD,' and why might that word be significant?
What two-sided fraud does Amos 8:5 describe — what happens to the ephah, and what happens to the shekel?
How does Abraham's transaction with Ephron in Genesis 23:16 model the opposite of what Amos 8:5 describes?

Read the full passage on honest weights and measures in the Torah reader.

Open Leviticus 19 in the Torah Reader