Genesis is the first book of the Bible. It opens with the lines:

1: In the beginning God created the heaven and the earth.
2: And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.
3: And God said, Let there be light: and there was light.

Genesis 1: 1-3

The book’s first chapter tells the history of the first days of existence. In those early days, God creates Adam and Eve, and they quickly meet their adversary in the form of the Subtil Serpent in chapter three. They ate from a tree that God commanded them not to eat from, and their infamous sin caused God to expel them and their subsequent line of children from the Garden of Eden.