The book of Genesis is the first book of the Bible and sits in the Torah (also called the Pentateuch); it has 50 chapters in the King James Version.
Genesis is traditionally attributed to Moses. Genesis contains the accounts of creation, the flood, and the beginnings of the nation of Israel through Abraham, Isaac, Jacob, and Joseph. A well-known passage from this book is Genesis 1:1. Read the full book at Genesis.
Genesis 1:1 opens with these words:
In the beginning God created the heaven and the earth.