Eternal Life. The idea is that a person's soul will be redeemed by the sacrifice of Christ and saved from punishment in hell. The idea is that your soul will live on after the death of the body, and eventually you will be judged. If you are judged as a christian, you are saved from eternal punishment in hell and are given a new body with which to live in in a perfect world. The beliefs vary slightly depending on the denomination, but that it the main idea.