'Rod' in the Bible

Wisdom is found on the lips of him who has discernment, but a rod is for the back of him who is void of understanding.

One who spares the rod hates his son, but one who loves him is careful to discipline him.

The fool's talk brings a rod to his back, but the lips of the wise protect them.

He who sows wickedness reaps trouble, and the rod of his fury will be destroyed.

Folly is bound up in the heart of a child: the rod of discipline drives it far from him.

Don't withhold correction from a child. If you punish him with the rod, he will not die.

Punish him with the rod, and save his soul from Sheol.

A whip is for the horse, a bridle for the donkey, and a rod for the back of fools!

The rod of correction gives wisdom, but a child left to himself causes shame to his mother.