Leviticus 19:35

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

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 giveth thee.

Hear ye now what the LORD saith; Arise, contend thou before the mountains, and let the hills hear thy voice.

A just weight and balance are the LORD’s: all the weights of the bag are his work.

A false balance is abomination to the LORD: but a just weight is his delight.

Divers weights, and divers measures, both of them are alike abomination to the LORD.

Ye shall do no unrighteousness in judgment: thou shalt not respect the person of the poor, nor honor the person of the mighty: but in righteousness shalt thou judge thy neighbour.

For with what judgment ye judge, ye shall be judged: and with what measure ye mete, it shall be measured to you again.