Genesis 3:14b
Upon your stomach you will go,
And dust you will eat
All the days of your life.
A second aspect of the curse pronounced upon the serpent was that the serpent was limited to eating only dust. Dust is the serpent's food. We were made from dust. If we are earthy, living in an earthy manner, we become the serpent's food and he will devour us.
- "Life Study of Genesis" chapter 19