Proverbs 27:20

Iron sharpens iron;

so a man sharpens his friend’s countenance.

Whoever tends the fig tree shall eat its fruit.

He who looks after his master shall be honored.

Like water reflects a face,

so a man’s heart reflects the man.

The crucible is for silver,

and the furnace for gold;

but man is refined by his praise.

Though you grind a fool in a mortar with a pestle along with grain,

yet his foolishness will not be removed from him.

Know well the state of your flocks,

and pay attention to your herds,