Deuteronomy 25:13-18

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

14Thou shalt not have in thine house divers measures, a great and a small.

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

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

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

18how he met thee by the way, and smote the hindmost of thee, all that were feeble behind thee, when thou wast faint and weary; and he feared not God.