Cross reference
Proverbs 30:16
16 The underworld, and the woman without a child; the earth which never has enough water, and the fire which never says, Enough.
Proverbs 27:20
20 The underworld and Abaddon are never full, and the eyes of man have never enough.
Genesis 30:1
1 Now Rachel, because she had no children, was full of envy of her sister; and she said to Jacob, If you do not give me children I will not go on living.
Habakkuk 2:5
5 A curse on the cruel and false one! the man full of pride, who never has enough; who makes his desires wide as the underworld! he is like death; he is never full, but he makes all nations come to him, getting all peoples together to himself.