15 The leech has two daughters; "Give, give," they cry. Three things are never satisfied; four never say, "Enough": 16 Sheol, the barren womb, the earth ever thirsty for water, and the fire that never says, "Enough." 17 The eye that mocks a father and scorns to obey a mother will be pecked out by the ravens of the valley and eaten by the vultures.
Matthew Henry's Commentary on Proverbs 30:15-17
Commentary on Proverbs 30:15-17
(Read Proverbs 30:15-17)
Cruelty and covetousness are two daughters of the horseleech, that still cry, "Give, give," and they are continually uneasy to themselves. Four things never are satisfied, to which these devourers are compared. Those are never rich that are always coveting. And many who have come to a bad end, have owned that their wicked courses began by despising their parents' authority.