'Back' in the Bible

In the lips of him that hath discernment wisdom is found; But a rod is for the back of him that is void of understanding.

Judgments are prepared for scoffers, And stripes for the back of fools.

To make thee know the certainty of the words of truth, That thou mayest carry back words of truth to them that send thee?

Deliver them that are carried away unto death, And those that are ready to be slain see that thou hold back.

A whip for the horse, a bridle for the ass, And a rod for the back of fools.

A fool uttereth all his anger; But a wise man keepeth it back and stilleth it.