All Christians believe that God exists. Do they have proper justifications for this belief? Yes, their belief is thousands of years old, but that doesn't make it the truth. The Bible is a sort of justification due to the fact that it was written separately, by many different writers who were never associated and never met. There is also the fact of the world around us. All these organisms and substances could not have been created so perfectly by a simple BIG BOOM, or by a series of lucky by chance occurrances. And there so called miracles that have occurred in certain Christian faiths that are solid justifications of a larger power, such as healings and other unexplainable events like incorrupt bodies of believers who, when they died, did not rot or mold . If you have a scientific side you would like to argue or other justifications for the christian beliefs please comment.