Genesis 3:14-15

14The Lord God said to the serpent, “Because you have done this, cursed are you above all the wild beasts and all the living creatures of the field! On your belly you will crawl and dust you will eat all the days of your life.

15And I will put hostility between you and the woman and between your offspring and her offspring; her offspring will attack your head, and you will attack her offspring’s heel.”