3. The holy book of Christianity is the Bible. It is separated into the Old and New Testament. The main message of the Bible is that when Jesus died, everyone's sins were forgiven, and if you believe in God/Jesus, you will be "saved", and go to heaven, as seen in this quote: "If you declare with your mouth, 'Jesus is Lord', and believe in your heart that God raised him from the dead, you will be saved".
