Deuteronomy 25:15

15 Thou shalt have a just and a true weight, and thy bushel shall be equal and true: that thou mayest live a long time upon the land which the Lord thy God shall give 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 divers weights in thy bag, a greater and a less:

14 Neither shall there be in thy house a greater bushel and a less.

15 Thou shalt have a just and a true weight, and thy bushel shall be equal and true: that thou mayest live a long time upon the land which the Lord thy God shall give thee.

16 For the Lord thy God abhorreth him that doth these things, and he hateth all injustice.

17 Remember what Amalec did to thee in the way when thou camest out of Egypt: