The book of John is the fourth of the Gospels and sits in the New Testament; it has 21 chapters in the King James Version.
John is traditionally attributed to John. John opens with the prologue "In the beginning was the Word" and is organized around seven signs of Jesus and seven "I am" sayings. A well-known passage from this book is John 3:16. Read the full book at John.
John 1:1 opens with these words:
In the beginning was the Word, and the Word was with God, and the Word was God.