You must maintain accurate and honest weights and measures, so that you may live long in the land that the LORD your God is giving you.
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.
Commenting on Deuteronomy 25:13-19
But thou shall have a perfect and just weight, a perfect and just measure shall thou have,.... That is, full weights, and full measures; and such as are alike, and everywhere used, according to the standard of the country; See Gill on Lev 19:36, that thy days may be lengthened in the land which the Lord thy God giveth thee; long life was always reckoned...
Deu 25:13-16 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.
Commenting on Deuteronomy 25:13-16