Are you definitely going to heaven when you die? Are you sure? Becoming a Christian can be as simple as making a decision to follow Jesus Christ. And, often times that decision is made during an altar call at a church service that leads people through a simple prayer. But, how can we be sure the prayer worked? How can we be certain that we are a real Christian according to the Bible? How can we be sure that when we die we will go to heaven? There are several schools of thought about salvation. Some teach that once you are saved, you will always be saved. Others teach that we can lose our...