Proverbs 21:11-13

Revised Standard Version

¹¹ When a scoffer is punished, the simple becomes wise;
    when a wise man is instructed, he gains knowledge.
¹² The righteous observes the house of the wicked;
    the wicked are cast down to ruin.
¹³ He who closes his ear to the cry of the poor
    will himself cry out and not be heard.