Deuteronomy 25:15

15 But thou shalt have a perfect and just weight, a perfect and just measure shalt thou have, that thy days may be lengthened in the land which the LORD thy God gives thee.

Deuteronomy 25:15 Meaning and Commentary

Deuteronomy 25:15

[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 Leviticus 19:36);

that thy days may be lengthened in the land which the Lord thy God
giveth thee;
long life was always reckoned a blessing, and is frequently promised to, obedience, and particularly long life in the land of Canaan; which was a most delightful and fruitful land, and which a man might wish to live long in; deceitful men, are threatened with not living half their days, and such may they be said to be that use false weights and measures, ( Psalms 55:23 ) .

Deuteronomy 25:15 In-Context

13 Thou shalt not have in thy bag different weights, a great and a small.

14 Thou shalt not have in thy house different measures, a great and a small.

15 But thou shalt have a perfect and just weight, a perfect and just measure shalt thou have, that thy days may be lengthened in the land which the LORD thy God gives thee.

16 For all that do such things and all that do unrighteously are an abomination unto the LORD thy God.

17 Remember what Amalek did unto thee by the way when ye were come forth out of Egypt,