Deuteronomy 25:13

The duty of integrity in trade is once more enforced in Deu 25:13-16 (as in Lev 19:35-36). "Stone and stone," i.e., two kinds of stones for weighing (cf. Psa 12:3), viz., large ones for buying and small ones for selling. On the promise in Deu 25:15, see Deu 4:26; Deu 5:16; Deu 25:16, as in Deu 22:5; Deu 18:12, etc. In the concluding words, Deu 25:16, "all that do unrighteously," Moses sums up all breaches of the law.

Here is, I. A law against deceitful weights and measures: they must not only not use them, but they must not have them, not have them in the bag, not have them in the house (Deu 25:13, Deu 25:14); for, if they had them, they would be strongly tempted to use them. They must not have a great weight and measure to buy by and a small one to sell by, for that was to cheat both ways, when either was bad enough; as we read of those that made the ephah small, in which they measured the corn they sold, and the shekel great, by which they weighed the money they received for it, Amo 8:5. But thou shalt have a perfect and just weight, v. 15. That which is the rule of justice must itself be just; if that be otherwise, it is a constant cheat. This had been taken care of before, Lev 19:35, Lev 19:36. This law is enforced with two very good reasons: - 1. That justice and equity will bring down upon us the blessing of God. The way to have our days lengthened, and to prosper, is to be just and fair in all our dealings Honesty is the best policy. 2. That fraud and injustice will expose us to the curse of God, Deu 25:16. Not only unrighteousness itself, but all that do unrighteously, are an abomination to the Lord. And miserable is that man who is abhorred by his Maker. How hateful, particularly, all the arts of deceit are to God, Solomon several times observes, Pro 11:1; Pro 20:10, Pro 20:23; and the apostle tells us that the Lord is the avenger of all such as overreach and defraud in any matter, Th1 4:6. II. A law for the rooting out of Amalek. Here is a just weight and a just measure, that, as Amalek had measured to Israel, so it should be measure to Amalek again. 1. The mischief Amalek did to Israel must be here remembered, Deu 25:17, Deu 25:18. When it was first done it was ordered to…

25:13-14 You must use accurate scales . . . full and honest measures (Hebrew you must not have stone and stone, large and small, . . . ephah and ephah, large and small): Merchants were not to use two sets of weights and measures for cheating customers—a heavier weight or measure when purchasing goods (thus reducing their own cost) and a lighter one when selling them (thus increasing their own profit).