Christianity is a type of religion that believes in one God named Jehovah. Jehovah is the same God that the Jewish people believe in. The main book of Christianity is the Bible. It is made up of stories and teachings about God, Jesus, and how a Christian should live their life. Other religions follow different Gods or beliefs than Christianity and have their own special books and teachings. For example, Hindus believe in many gods and Buddhists may not believe in any gods and focus on self-truth. All religions have different ways of worshipping, believing and living their life.