Proverbs 30:10–31

10   Do not slander a servant to his master,
    lest he curse you, and you be held guilty.
11   There are those who curse their fathers
    and do not bless their mothers.
12   There are those who are clean in their own eyes
    but are not washed of their filth.
13   There are those—how lofty are their eyes,
    how high their eyelids lift!
14   There are those whose teeth are swords,
    whose fangs are knives,
  to devour the poor from off the earth,
    the needy from among mankind.
15   The leech has two daughters:
    Give and Give.
  Three things are never satisfied;
    four never say, “Enough”:
16   Sheol, the barren womb,
    the land never satisfied with water,
    and the fire that never says, “Enough.”
17   The eye that mocks a father
    and scorns to obey a mother
  will be picked out by the ravens of the valley
    and eaten by the vultures.
18   Three things are too wonderful for me;
    four I do not understand:
19   the way of an eagle in the sky,
    the way of a serpent on a rock,
  the way of a ship on the high seas,
    and the way of a man with a virgin.
20   This is the way of an adulteress:
    she eats and wipes her mouth
    and says, “I have done no wrong.”
21   Under three things the earth trembles;
    under four it cannot bear up:
22   a slave when he becomes king,
    and a fool when he is filled with food;
23   an unloved woman when she gets a husband,
    and a maidservant when she displaces her mistress.
24   Four things on earth are small,
    but they are exceedingly wise:
25   the ants are a people not strong,
    yet they provide their food in the summer;
26   the rock badgers are a people not mighty,
    yet they make their homes in the cliffs;
27   the locusts have no king,
    yet all of them march in rank;
28   the lizard you can take in your hands,
    yet it is in kings’ palaces.
29   Three things are stately in their tread;
    four are stately in their stride:
30   the lion, which is mightiest among beasts
    and does not turn back before any;
31   the strutting rooster, the he-goat,
    and a king whose army is with him.

(ESV)