17Iron sharpens iron; in the same way, a man sharpens his friend.
18The one who tends a fig tree will eat its fruit, and the one who protects his master will be honored.
19Just as water reflects a person's face, so a person's heart reflects the person.
20Just as Sheol and Abaddon are never satisfied, so a man's eyes are never satisfied.
21A crucible is for silver and a furnace is for gold; and a person is tested when he is praised.