Deuteronomy 25:12 (KJV)

And if the man like not to take his brother's wife, then let his brother's wife go up to the gate unto the elders, and say, My husband's brother refuseth to raise up unto his brother a name in Israel, he will not perform the duty of my husband's brother.

Then the elders of his city shall call him, and speak unto him: and if he stand to it, and say, I like not to take her;

Then shall his brother's wife come unto him in the presence of the elders, and loose his shoe from off his foot, and spit in his face, and shall answer and say, So shall it be done unto that man that will not build up his brother's house.

And his name shall be called in Israel, The house of him that hath his shoe loosed.

When men strive together one with another, and the wife of the one draweth near for to deliver her husband out of the hand of him that smiteth him, and putteth forth her hand, and taketh him by the secrets:

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

Thou shalt not have in thine house divers measures, 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.

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

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