Deuteronomy 25:15

15 A perfect and just weight shalt thou have; a perfect and just measure shalt thou have: that thy days may be long in the land which Jehovah thy God giveth 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 diverse weights, a great and a small.

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

15 A perfect and just weight shalt thou have; a perfect and just measure shalt thou have: that thy days may be long in the land which Jehovah thy God giveth thee.

16 For all that do such things, [even] all that do unrighteously, are an abomination unto Jehovah thy God.

17 Remember what Amalek did unto thee by the way as ye came forth out of Egypt;