The Bible includes 66 volumes of adventures, history, poems and letters. Many different authors have written it for hundreds of years. The Bible includes the New Testament and the Old Testament. The original Old Testament was written in Hebrew, which was the language of ancient Jews. The Old Testament was originally a holy book of Judaism, mainly containing stories and legends about the origin of the world and mankind, religious narratives of the ancient history of the Jewish nation, and their codes, prophets, poems and proverbs. The original New Testament was written in Greek, a language that was familiar to everyone in the Roman Empire when Jesus was alive. The New Testament is a classic of Christianity itself, which records the historical legends about Jesus, his words and deeds, the situation of the early church, the letters of the apostles and the revelation of God.