The Christian Bible is composed of 66 books written by various authors over long periods of time. It began as an oral tradition with stories and teachings passed down between generations. The earliest written records of Bible stories were on clay tablets, while later copies were written by hand on materials like papyrus and parchment. The Bible contains different literary styles including stories, poetry, letters, wisdom, history, and prophecies. It is now the world's best-selling and most widely distributed book.